Let's Learn English! Topic: Sound! ๐ŸŽค๐Ÿ”‰๐Ÿ•ฌ

39,534 views ใƒป 2023-02-05

Learn English with Bob the Canadian


ไธ‹ใฎ่‹ฑ่ชžๅญ—ๅน•ใ‚’ใƒ€ใƒ–ใƒซใ‚ฏใƒชใƒƒใ‚ฏใ™ใ‚‹ใจๅ‹•็”ปใ‚’ๅ†็”Ÿใงใใพใ™ใ€‚ ็ฟป่จณใ•ใ‚ŒใŸๅญ—ๅน•ใฏๆฉŸๆขฐ็ฟป่จณใงใ™ใ€‚

00:00
Well hello and welcome to this English lesson about sound.
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ใ“ใ‚“ใซใกใฏใ€ ้Ÿณใซ้–ขใ™ใ‚‹่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใธใ‚ˆใ†ใ“ใใ€‚
00:04
Today we'll talk about one of the senses. We have a number of
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ไปŠๆ—ฅใฏใ€ๆ„Ÿ่ฆšใฎ1ใคใซใคใ„ใฆ่ฉฑใ—ใพใ™ ใ€‚ ็งใŸใกใฏๅคšใใฎๆ„Ÿ่ฆšใ‚’ๆŒใฃใฆใ„
00:08
senses. I think five taste, touch, sight, sound, or hearing
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ใพใ™ใ€‚ ๅ‘ณ่ฆšใ€ ่งฆ่ฆšใ€่ฆ–่ฆšใ€่ด่ฆšใ€่ด่ฆšใฎ5ใคใ ใจ
00:14
we would say. Um but we're going to talk about the world
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ๆ€ใ„ใพใ™ใ€‚ ใˆใˆใจใ€็งใŸใกใฏ้Ÿณ ใฎไธ–็•Œใซใคใ„ใฆ่ฉฑใ—ใพใ™
00:18
of sound. Um I'm going to talk about everything that I could
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ใ€‚ ใˆใˆใจใ€ใƒˆใƒ”ใƒƒใ‚ฏใฎ้Ÿณใซ้–ข้€ฃใ™ใ‚‹
00:21
think of yesterday when I designed these slides for this
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ใ“ใฎ่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใฎใŸใ‚ใซใ“ใ‚Œใ‚‰ใฎใ‚นใƒฉใ‚คใƒ‰ใ‚’ใƒ‡ใ‚ถใ‚คใƒณใ—ใŸใจใใซใ€ๆ˜จๆ—ฅๆ€ใ„ใคใ„ใŸใ™ในใฆใซใคใ„ใฆ่ฉฑใ—ใพใ™
00:25
English lesson related to the topic sound. I think it will be
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ใ€‚ ๆฅฝใ—ใ„ใƒฌใƒƒใ‚นใƒณใซใชใ‚‹ใจๆ€ใ„ใพใ™
00:30
a fun lesson. There are some pretty cool words and phrases
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ใ€‚ ใ“ใฎใƒฌใƒƒใ‚นใƒณใซใฏใ€ ใ‹ใชใ‚Šใ‚ฏใƒผใƒซใชๅ˜่ชžใ‚„
00:34
in this lesson. So once again welcome to this English lesson
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ใƒ•ใƒฌใƒผใ‚บใŒใ„ใใคใ‹ใ‚ใ‚Šใพใ™ใ€‚ ใใ‚Œใงใฏใ€้Ÿณใซ้–ขใ™ใ‚‹ ่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใธใ‚ˆใ†ใ“ใ
00:38
about sound. Sound. When we talk about sound we're talking
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ใ€‚ ้Ÿณใ€‚ ็งใŸใกใŒ้Ÿณใซใคใ„ใฆ่ฉฑใ™ใจใใ€ใใ‚Œใฏ
00:43
about waves that come into our ear and our ear turns it into
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็งใŸใกใฎ่€ณใซๅ…ฅใฃใฆใใ‚‹ๆณขใซใคใ„ใฆ่ฉฑใ—ใฆใ„ใ‚‹ใฎใงใ™ใ€‚ ็งใŸใกใฎ่€ณใฏใใ‚Œใ‚’
00:50
information our brains can understand and then we hear
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็งใŸใกใฎ่„ณใŒ็†่งฃใงใใ‚‹ๆƒ…ๅ ฑใซๅค‰ๆ›ใ— ใ€ใใ‚Œใ‹ใ‚‰็งใŸใกใฏไฝ•ใ‹ใ‚’่žใ
00:54
something. So as you go through life you can see things with
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ใพใ™. ใงใ™ใ‹ใ‚‰ใ€ ไบบ็”Ÿใ‚’ๆญฉใ‚“ใงใ„ใใจใ€็›ฎใง็‰ฉใ‚’่ฆ‹ใ‚‹ใ“ใจ
00:58
your eyes but you could also hear sounds with your ear you
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ใŒใงใใพใ™ใŒใ€ ่€ณใง้Ÿณใ‚’่žใใ“ใจใ‚‚ใงใใพใ™ใ€‚
01:03
probably hear sounds from the very minute you get up. The
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ใŠใใ‚‰ใใ€่ตทใใŸ็žฌ้–“ใ‹ใ‚‰้ŸณใŒ่žใ“ใˆใ‚‹ ใงใ—ใ‚‡ใ†ใ€‚ ๆœ่ตทใใฆ
01:06
first sound I hear in the morning is my alarm clock going
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ๆœ€ๅˆใซ่žใ“ใˆใ‚‹ใฎ ใฏใ€็›ฎ่ฆšใพใ—ๆ™‚่จˆใŒ
01:10
off. But this morning I didn't actually have to use it. I woke
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้ณดใ‚‹้Ÿณใงใ™ใ€‚ ใ—ใ‹ใ—ใ€ไปŠๆœใฏ ๅฎŸ้š›ใซไฝฟ็”จใ™ใ‚‹ๅฟ…่ฆใฏใ‚ใ‚Šใพใ›ใ‚“ใงใ—ใŸใ€‚
01:15
up before my alarm clock. So the sound of my alarm clock
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็งใฏ็›ฎ่ฆšใพใ—ๆ™‚่จˆใฎๅ‰ใซ็›ฎใŒ่ฆšใ‚ใŸใ€‚ ใ ใ‹ใ‚‰ ใ€ไปŠๆœใฎ็›ฎ่ฆšใพใ—ๆ™‚่จˆใฎ้Ÿณใฏ
01:19
wasn't required this morning. I woke up all on my own. So that
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ๅฟ…่ฆใ‚ใ‚Šใพใ›ใ‚“ใงใ—ใŸใ€‚ ็ง ใฏใ™ในใฆ่‡ชๅˆ†ใง็›ฎใ‚’่ฆšใพใ—ใŸใ€‚ ใใฎ
01:25
sound is what you hear with your ears. We'll talk a little
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้Ÿณใฏใ‚ใชใŸใฎ่€ณใง่žใ“ใˆใ‚‹ใ‚‚ใฎใงใ™ ใ€‚
01:29
bit more about that as well. This is how You hear sound. Um
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ใ“ใ‚Œใซใคใ„ใฆใ‚‚ใ€ใ‚‚ใ†ๅฐ‘ใ—่ฉณใ—ใ่ชฌๆ˜Žใ—ใพใ™ใ€‚ ใ“ใ‚ŒใŒใ‚ใชใŸใŒ้Ÿณใ‚’่žใๆ–นๆณ•ใงใ™ใ€‚
01:34
you can sometimes feel sound in your chest if it's a very very
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้žๅธธใซไฝŽใ„้Ÿณใงใ‚ใ‚Œใฐใ€่ƒธใฎไธญใง้Ÿณใ‚’ๆ„Ÿใ˜ใ‚‹ใ“ใจใŒใ‚ใ‚Šใพใ™
01:40
low sound. But ninety-nine point nine percent of the time
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ใ€‚ ใ—ใ‹ใ—ใ€ 99.9% ใฎ็ขบ็Ž‡ใงใ€
01:44
you hear sound with your ear. That is how you sense whether
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่€ณใง้ŸณใŒ่žใ“ใˆใพใ™ใ€‚ ใใ‚ŒใŒใ€
01:50
there is noise or sound around you. I'm going to talk a little
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ๅ‘จๅ›ฒใซใƒŽใ‚คใ‚บใ‚„้ŸณใŒใ‚ใ‚‹ใ‹ใฉใ†ใ‹ใ‚’ๆ„Ÿใ˜ใ‚‹ๆ–นๆณ• ใงใ™ใ€‚
01:56
bit about the difference between the verb hear and
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ๅ‹•่ฉžใฎ่žใใจ
02:00
listen. This can be confusing for some people. The best I
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่žใใฎ้•ใ„ใซใคใ„ใฆๅฐ‘ใ—ใŠ่ฉฑใ—ใ—ใพใ™ใ€‚ ใ“ใ‚Œใฏ ใ€ไธ€้ƒจใฎไบบใซใจใฃใฆใฏๆททไนฑใ‚’ๆ‹›ใๅฏ่ƒฝๆ€งใŒใ‚ใ‚Šใพใ™ใ€‚
02:05
find to describe this is this. When you hear something you are
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ใ“ใ‚Œใ‚’่ชฌๆ˜Žใ™ใ‚‹ใฎใซ็งใŒ่ฆ‹ใคใ‘ใŸๆœ€่‰ฏใฎๆ–นๆณ•ใฏใ“ใ‚Œใงใ™ใ€‚ ไฝ•ใ‹ใ‚’่žใใจใใ€ใ‚ใชใŸใฏ
02:10
not choosing to do that. It happens to you. If Jen drops a
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ใใ‚Œใ‚’ใ™ใ‚‹ใ“ใจใ‚’้ธๆŠžใ—ใฆใ„ใพใ›ใ‚“ใ€‚ ใใ‚Œ ใฏใ‚ใชใŸใซ่ตทใ“ใ‚Šใพใ™ใ€‚ ใ‚ธใ‚งใƒณ
02:16
plate in the kitchen I will hear that. When I walk outside
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ใŒใ‚ญใƒƒใƒใƒณใซ็šฟใ‚’่ฝใจใ—ใŸใ‚‰ใ€ใใ‚ŒใŒ ่žใ“ใˆใพใ™ใ€‚
02:21
if a dog barks I hear it. The sound is coming to me. I am not
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็ŠฌใŒๅ ใˆใ‚‹ใจๅค–ใ‚’ๆญฉใใจ่žใ“ใˆใพใ™ใ€‚ ้Ÿณใฏ็งใซๆฅใฆใ„ใพใ™ใ€‚ ็งใฏ
02:27
choosing to hear that sound. It is happening to me. So when you
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ใใฎ้Ÿณใ‚’่žใใ“ใจใ‚’้ธๆŠžใ—ใฆใ„ใพใ›ใ‚“ใ€‚ ใใ‚Œ ใฏ็งใซ่ตทใ“ใฃใฆใ„ใพใ™ใ€‚ ใคใพใ‚Šใ€ไฝ•ใ‹ใ‚’่žใใจใใ€่‡ชๅˆ†ใซ่ตทใ“ใฃ
02:32
hear something you're describing a sound that is
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ใฆใ„ใ‚‹้Ÿณใ‚’่ชฌๆ˜Žใ—
02:35
happening to you. When you listen it changes a little bit.
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ใฆใ„ใ‚‹ใฎใงใ™ใ€‚ ่žใ„ใฆใฟใ‚‹ใจใ€ๅฐ‘ใ—ๅค‰ใ‚ใ‚Šใพใ™ใ€‚
02:40
When you listen you are deciding to hear those sounds.
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ใ‚ใชใŸใŒ่žใใจใใ€ใ‚ใชใŸใฏ ใใ‚Œใ‚‰ใฎ้Ÿณใ‚’่žใใ“ใจใซๆฑบใ‚ใฆใ„ใพใ™ใ€‚
02:45
I know I use the verb here and there but I have to do that.
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ๅ‹•่ฉžใ‚’ใ‚ใกใ“ใกใงไฝฟใฃใฆใ„ใ‚‹ใ“ใจใฏ็Ÿฅใฃใฆใ„ใพใ™ ใŒใ€ใใ†ใ—ใชใ‘ใ‚Œใฐใชใ‚Šใพใ›ใ‚“ใ€‚
02:48
When you listen to music you have decided to listen to
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ใ‚ใชใŸใŒ้Ÿณๆฅฝใ‚’่ดใใจใใ€ใ‚ใชใŸใฏ้Ÿณๆฅฝ ใ‚’่ดใใ“ใจใซๆฑบใ‚ใพใ—ใŸ
02:52
music. When you listen to someone talking you have
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ใ€‚ ่ชฐใ‹ใŒ่ฉฑใ—ใฆใ„ใ‚‹ใฎใ‚’่žใใจใใ€ใ‚ใชใŸ
02:55
decided I'm going to listen to them. So the basic difference
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ใฏ็งใŒๅฝผใ‚‰ใฎ่จ€ใ†ใ“ใจใ‚’่žใใจๆฑบใ‚ใฆใ„ ใพใ™ใ€‚ ใคใพใ‚Šใ€ๅŸบๆœฌ็š„ใช้•ใ„
03:00
is when you hear something it's happening to you. You hear a
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ใฏใ€่‡ชๅˆ†ใซ่ตทใ“ใฃใฆใ„ใ‚‹ใ“ใจใ‚’่žใใจใ ใงใ™ใ€‚
03:05
dog bark. You hear someone drop a plate. You didn't side for
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็Šฌใฎ้ณดใๅฃฐใŒ่žใ“ใˆใพใ™ใ€‚ ่ชฐใ‹ใŒ็šฟใ‚’่ฝใจใ™ใฎใŒ่žใ“ใˆใพใ™ ใ€‚ ใ‚ใชใŸใฏ
03:09
that to happen. Something has just happened and you hear it.
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ใใ‚ŒใŒ่ตทใ“ใ‚‹ใฎใ‚’ๆ”ฏๆŒใ—ใพใ›ใ‚“ใงใ—ใŸใ€‚ ไฝ•ใ‹ใŒ ่ตทใ“ใฃใŸใฐใ‹ใ‚Šใงใ€ใ‚ใชใŸใฏใใ‚Œใ‚’่žใ„ใฆใ„ใพใ™ใ€‚
03:14
But when you listen to a podcast or when you listen to
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ใ—ใ‹ใ—ใ€ ใƒใƒƒใƒ‰ใ‚ญใƒฃใ‚นใƒˆใ‚’่ดใ„
03:18
my voice right now or when you listen let me see what else
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ใŸใ‚Šใ€ไปŠ็งใฎๅฃฐ
03:23
would you when you listen to music you have decided that
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ใ‚’่ดใ„ใŸใ‚Šใ€้Ÿณๆฅฝใ‚’่ดใ„ใŸใ‚Šใ™ใ‚‹ใจใใซไป–ใซไฝ•ใŒใ—ใŸใ„ใ‹ใ‚’่žใ„ใŸใ‚Šใ™ใ‚‹ใจใใ€ใ‚ใชใŸ
03:27
that is something that you want to do. So hopefully that helps
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ใฏใใ‚ŒใŒใ‚ใชใŸใŒใ—ใŸใ„ใ“ใจใ ใจๆฑบใ‚ใพใ—ใŸ . ใ†ใพใใ„ใ‘ใฐใ€ใใ‚ŒใŒใ‚ใชใŸใซๅฐ‘ใ—ๅฝน็ซ‹ใคใ“ใจใ‚’้ก˜ใฃใฆใ„ใพใ™
03:30
you a little bit. When you hear something you have no choice.
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ใ€‚ ไฝ•ใ‹ใ‚’่žใ„ใŸใจใใ€ ใ‚ใชใŸใฏ้ธๆŠžใฎไฝ™ๅœฐใŒใ‚ใ‚Šใพใ›ใ‚“ใ€‚
03:34
When you listen to something you have chosen to do that.
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ใ‚ใชใŸใŒไฝ•ใ‹ใ‚’่žใใจใใ€ใ‚ใชใŸใฏใใ‚Œใ‚’ใ™ใ‚‹ ใ“ใจใ‚’้ธใณใพใ—ใŸใ€‚
03:40
Sound is made up of waves that move through the air. Now
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้Ÿณใฏใ€็ฉบๆฐ—ไธญใ‚’็งปๅ‹•ใ™ใ‚‹ๆณขใงๆง‹ๆˆใ•ใ‚Œใฆใ„ ใพใ™ใ€‚
03:44
remember this is not an a science lesson. I'm not going
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ใ“ใ‚Œใฏ็ง‘ๅญฆใฎๆŽˆๆฅญใงใฏใชใ„ใ“ใจใ‚’่ฆšใˆใฆใŠใ„ใฆใใ ใ•ใ„ ใ€‚ ใ™ในใฆใฎ่ฉณ็ดฐใซ็ซ‹ใกๅ…ฅใ‚‹ใคใ‚‚ใ‚Šใฏใ‚ใ‚Šใพใ›ใ‚“
03:48
to go into all the details. But there is something that makes
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ใ€‚ ใ—ใ‹ใ—
03:53
the sound and it actually creates waves in the air that
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ใ€้Ÿณใ‚’ๅ‡บใ™ไฝ•ใ‹ใŒใ‚ใ‚Šใ€ๅฎŸ้š›ใซ ใฏ็›ฎใซ่ฆ‹ใˆใชใ„็ฉบๆฐ—ใฎๆณขใ‚’ไฝœใ‚Šๅ‡บใ—
03:57
we can't see. They are invisible. And our ear then
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ใพใ™ใ€‚ ใใ‚Œใ‚‰ใฏ ็›ฎใซ่ฆ‹ใˆใพใ›ใ‚“ใ€‚ ใใ—ใฆใ€็งใŸใกใฎ่€ณ
04:01
starts to move at that same speed. Our eardrum. So again
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ใฏๅŒใ˜้€Ÿๅบฆใงๅ‹•ใๅง‹ใ‚ ใพใ™ใ€‚ ็งใŸใกใฎ้ผ“่†œใ€‚ ็นฐใ‚Š่ฟ”ใ—ใพใ™
04:06
not a science lesson but sound waves are how sound travels.
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ใŒใ€็ง‘ๅญฆใฎๆŽˆๆฅญใงใฏใ‚ใ‚Šใพใ›ใ‚“ใŒใ€ ้Ÿณๆณขใฏ้Ÿณใฎไผใ‚ใ‚Šๆ–นใงใ™ใ€‚
04:11
When I yell my my voice travels. I have created sound
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็งใŒๅซใถใจ็งใฎๅฃฐใฏ็งปโ€‹โ€‹ๅ‹•ใ— ใพใ™ใ€‚ ็งใฏ็ฉบไธญใ‚’
04:17
waves that travel through the air and eventually they they
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ไผใ‚ใ‚‹้Ÿณๆณขใ‚’ไฝœใ‚Šๅ‡บใ— ใ€ๆœ€็ต‚็š„ใซ
04:22
hit someone's ear and they can hear me. The main way we make
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่ชฐใ‹ใฎ่€ณใซๅฝ“ใŸใ‚Šใ€ๅฝผใ‚‰ใฏ ็งใฎๅฃฐใ‚’่žใใ“ใจใŒใงใใพใ™. ็งใŸใกใŒใƒ†ใ‚ฏใƒŽใƒญใ‚ธใƒผใง้Ÿณใ‚’ๅ‡บใ™ไธปใชๆ–นๆณ•ใฏ
04:28
sound with technology is to use a speaker. You might have
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ใ€ใ‚นใƒ”ใƒผใ‚ซใƒผใ‚’ไฝฟ็”จใ™ใ‚‹ใ“ใจใงใ™ใ€‚
04:32
computer speakers on each side of your computer at home or
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่‡ชๅฎ…ใพใŸใฏ็พๅœจใ€ใ‚ณใƒณใƒ”ใƒฅใƒผใ‚ฟใƒผใฎไธกๅดใซใ‚ณใƒณใƒ”ใƒฅใƒผใ‚ฟใƒผ ใ‚นใƒ”ใƒผใ‚ซใƒผใŒใ‚ใ‚‹
04:36
maybe right now. If you're listening with earbud Oops.
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ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚ ใ‚คใƒคใƒ•ใ‚ฉใƒณใง่žใ„ใฆใ„ใ‚‹ๅ ดๅˆ
04:41
Earbuds. There's actually a tiny speaker inside. When you
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ใ‚คใƒคใƒ•ใ‚ฉใƒณใ€‚ ๅฎŸใฏ ๅฐใ•ใชใ‚นใƒ”ใƒผใ‚ซใƒผใŒๅ…ฅใฃใฆใ„ใพใ™ใ€‚
04:46
talk on your phone maybe the sound right now for you while
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ใ‚ใชใŸใŒ้›ป่ฉฑใง่ฉฑใ—ใฆใ„ใ‚‹ใจใใ€ใ‚ใชใŸใŒ็งใฎ่ฉฑใ‚’่žใ„ใฆใ„ใ‚‹ใจใใฎ ใ‚ใชใŸใฎไปŠใฎ้Ÿณ
04:50
you're listening to me is coming out of one of the
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04:52
speakers that is on your phone. So the speaker is just a little
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ใฏใ€ใ‚ใชใŸใฎ้›ป่ฉฑใฎใ‚นใƒ”ใƒผใ‚ซใƒผใฎ1ใคใ‹ใ‚‰ๅ‡บใฆใ„ใ‚‹ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“. ใคใพใ‚Šใ€ใ‚นใƒ”ใƒผใ‚ซใƒผใฏใ€ๅ–ๅพ—ใ—ใŸ
04:58
machine or a little piece of technology that will create
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ๆƒ…ๅ ฑใซๅŸบใฅใ„ใฆ้Ÿณๆณขใ‚’็”Ÿๆˆใ™ใ‚‹ๅฐใ•ใชๆฉŸๆขฐใพใŸใฏๅฐใ•ใชใƒ†ใ‚ฏใƒŽใƒญใ‚ธใƒผใซใ™ใŽใพใ›ใ‚“
05:03
sound waves based on the information it is getting. And
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ใ€‚
05:09
then of course this in front of me is a microphone. So as I
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ใใ—ใฆใ‚‚ใกใ‚ใ‚“ใ€็›ฎใฎๅ‰ใซ ใ‚ใ‚‹ใฎใฏใƒžใ‚คใ‚ฏใงใ™ใ€‚ ใ ใ‹ใ‚‰็ง
05:14
talk into this the sound of my voice moves something inside.
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ใŒใ“ใ‚Œใซใคใ„ใฆ่ฉฑใ™ใจใใ€็งใฎๅฃฐใฎ้Ÿณใฏ ไฝ•ใ‹ใ‚’ๅ†…ๅดใซๅ‹•ใ‹ใ—ใพใ™ใ€‚ ้›ปๆฐ—
05:19
It's converted into electricity. And it gets sent
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ใซๅค‰ๆ›ใ•ใ‚Œ ใพใ™ใ€‚ ใใ—ใฆใ€ใใ‚Œใฏ
05:23
all over the world. And then at your end your earbuds or your
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ไธ–็•Œไธญใซ้€ใ‚‰ใ‚Œใพใ™ใ€‚ ใใ—ใฆๆœ€ๅพŒใซใ€ใ‚คใƒคใƒ•ใ‚ฉใƒณใพใŸใฏ
05:27
speakers recreate the sound of my voice. So the microphone is
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ใ‚นใƒ”ใƒผใ‚ซใƒผใŒ็งใฎๅฃฐใฎ้Ÿณใ‚’ๅ†็พใ—ใพใ™ ใ€‚ ใงใ™ใ‹ใ‚‰ใ€ใƒžใ‚คใ‚ฏใฏ้Ÿณใ‚’ๅ–ใ‚Š่พผใ‚€
05:32
what for lack of a better way takes sound in. And the speaker
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ใ‚ˆใ‚Š่‰ฏใ„ๆ–นๆณ•ใŒใชใ„ใŸใ‚ใฎใ‚‚ใฎ ใงใ™ใ€‚ใใ—ใฆ
05:37
puts sound out. Microphones and speakers are awesome. They are
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ใ‚นใƒ”ใƒผใ‚ซใƒผใฏ้Ÿณใ‚’ๅ‡บใ—ใพใ™ใ€‚ ใƒžใ‚คใ‚ฏใจ ใ‚นใƒ”ใƒผใ‚ซใƒผใฏ็ด ๆ™ดใ‚‰ใ—ใ„ใงใ™ใ€‚ ๅฝผใ‚‰ใฎ
05:42
what allow me to teach English like this on the internet.
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ใŠใ‹ใ’ใงใ€็งใฏใ‚คใƒณใ‚ฟใƒผใƒใƒƒใƒˆใงใ“ใฎใ‚ˆใ†ใซ่‹ฑ่ชžใ‚’ๆ•™ใˆใ‚‹ใ“ใจใŒใงใใพใ—ใŸ ใ€‚
05:46
Super fun. And then of course I mentioned earbuds but there's
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่ถ…ๆฅฝใ—ใ„ใ€‚ ใใ—ใฆ ใ‚‚ใกใ‚ใ‚“ใ‚คใƒคใƒ›ใƒณใซใคใ„ใฆใ‚‚่งฆใ‚Œใพใ—ใŸใŒ
05:51
also headphones. These are things that you put on your ear
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ใ€ใƒ˜ใƒƒใƒ‰ใƒ›ใƒณใ‚‚ใ‚ใ‚Šใพใ™ใ€‚ ใ“ใ‚Œใ‚‰ใฏ ใ€่€ณใซไป˜ใ‘ใŸใ‚Šใ€่€ณใซๅ…ฅใ‚ŒใŸใ‚Šใ™ใ‚‹ใ‚‚ใฎใงใ™
05:56
or in your ear. Headphones go on your ear or over your ear
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ใ€‚ ใƒ˜ใƒƒใƒ‰ใƒ•ใ‚ฉใƒณ ใฏ่€ณใซ่ฃ…็€ใ™ใ‚‹ใ‹ใ€่€ณใซ่ฃ…็€ใ—ใ€่€ณใซ่ฃ…็€ใ™ใ‚‹ใƒ˜ใƒƒใƒ‰ใƒ•ใ‚ฉใƒณใพใŸใฏใ‚คใƒคใƒ•ใ‚ฉใƒณใ‚’่ฃ…็€
06:01
and they allow you to listen privately when you wear
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ใ™ใ‚‹ใจใ€ๅ€‹ไบบ็š„ใซ่žใใ“ใจใŒใงใใพใ™
06:05
headphones or earbuds which go in your ear. Other people can't
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ใ€‚
06:10
hear what you're listening to. So one of the ways to hear
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ใ‚ใชใŸใŒ่žใ„ใฆใ„ใ‚‹ใ“ใจใฏใ€ไป–ใฎไบบใซใฏ่žใ“ใˆใพใ›ใ‚“ใ€‚ ใ—ใŸใŒใฃใฆใ€้Ÿณใ‚’่žใๆ–นๆณ•ใฎ 1 ใคใฏใ€่ชฐใ‹ใฎ้Ÿณใ‚’่žใๆ–นๆณ•ใฎ 1 ใคใงใ‚ใ‚Šใ€้Ÿณๆฅฝ
06:13
sounds one of the ways to listen to some one or to listen
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ใ‚’่ดใๆ–นๆณ•ใฎ 1 ใคใฏใ€
06:18
to music is to use a pair of headphones or a pair of
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ใƒ˜ใƒƒใƒ‰ใƒ•ใ‚ฉใƒณใพใŸใฏใ‚คใƒคใƒ•ใ‚ฉใƒณใ‚’ไฝฟ็”จใ™ใ‚‹ใ“ใจ
06:22
earbuds. We don't always add the word pair. You know in
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ใงใ™ใ€‚ ๅ˜่ชžใƒšใ‚ขใ‚’ๅธธใซ่ฟฝๅŠ ใ™ใ‚‹ใจใฏ้™ใ‚Šใพใ›ใ‚“ ใ€‚
06:25
English we like to shorten things right? So we use
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่‹ฑ่ชžใงใฏ็‰ฉไบ‹ใ‚’็Ÿญใ ใ™ใ‚‹ใฎใŒๅฅฝใใงใ™ใ‚ˆใญ๏ผŸ ใใฎใŸใ‚ใ€ใƒ˜ใƒƒใƒ‰ใƒ•ใ‚ฉใƒณใพใŸใฏใ‚คใƒคใƒ•ใ‚ฉใƒณใ‚’ไฝฟ็”จใ—ใพใ™
06:28
headphones or earbuds. And there's a general term called
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ใ€‚ ใใ—ใฆ ใ€ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใจๅ‘ผใฐใ‚Œใ‚‹ไธ€่ˆฌ็š„ใช็”จ่ชžใŒใ‚ใ‚Š
06:35
audio. We use the word audio to refer to many things in the
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ใพใ™ใ€‚ ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใจใ„ใ†่จ€่‘‰ใฏใ€้Ÿณ ใฎไธ–็•Œใฎๅคšใใฎใ“ใจใ‚’ๆŒ‡ใ™ใŸใ‚ใซไฝฟ็”จใ•ใ‚Œใพใ™
06:40
world of sound. You can buy audio equipment. You can be an
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ใ€‚ ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชๆฉŸๅ™จใ‚’่ณผๅ…ฅใงใใพใ™ใ€‚ ใ‚ใชใŸใฏใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชๆŠ€่ก“่€…ใซใชใ‚‹ใ“ใจใŒใงใใพใ™
06:44
audio technician. Um you can listen to audio books. So it's
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ใ€‚ ใˆใˆใจ ใ€ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใƒ–ใƒƒใ‚ฏใ‚’่žใใ“ใจใŒใงใใพใ™ใ€‚ ใ“ใ‚Œใฏใ€้Ÿณใซใคใ„ใฆ่ฉฑใ™ใŸใ‚ใฎ
06:49
another I guess more formal way to talk about sound. Um you
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ใ‚‚ใ† 1 ใคใฎใ‚ˆใ‚Šใƒ•ใ‚ฉใƒผใƒžใƒซใชๆ–นๆณ•ใ ใจๆ€ใ„ใพใ™ ใ€‚ ใˆใˆใจ
06:55
have things like audio books were one of the coolest things
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ใ€ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใƒ–ใƒƒใ‚ฏใฎใ‚ˆใ† ใชใ‚‚ใฎใฏใ€็งใŒใƒ•ใƒฉใƒณใ‚น่ชžใ‚’ๅฎŒๆˆใ•ใ›ๅง‹ใ‚ใŸใจใใซ็™บ่ฆ‹ใ—ใŸๆœ€ใ‚‚ใ‚ฏใƒผใƒซใชใ‚‚ใฎใฎ1ใคใงใ—ใŸ
06:59
that I discovered when I was starting to perfect my French.
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. ่ชฐใ‹ใฎ
07:03
Audiobooks are really cool because you can listen to
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่ฉฑใ‚’่žใใ“ใจใŒใงใใ‚‹ใฎใงใ€ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ช
07:06
someone Read the book to you. So audio is kind of a a more
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ใƒ–ใƒƒใ‚ฏใฏๆœฌๅฝ“ใซใ‚ฏใƒผใƒซใงใ™ใ€‚ ใคใพใ‚Šใ€ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใฏใ€้Ÿณใฎไธ–็•Œใซใ‚ใ‚‹ใ‚‚ใฎใ‚’่กจใ™ใ€ใ‚ˆใ‚Š
07:11
formal general term for the things in the world of sound.
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ๆญฃๅผใชไธ€่ˆฌ็”จ่ชžใฎใ‚ˆใ†ใช ใ‚‚ใฎใงใ™ใ€‚
07:17
Um you can work at an audio visual department if you're at
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ๅคงๅญฆ ใชใ‚‰่ฆ–่ด่ฆš็ง‘ใงๅƒใ‘ใพใ™ใ‚ˆ
07:21
a university. I did that when I was in university. I worked at
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ใ€‚ ๅคงๅญฆๆ™‚ไปฃใซใ‚„ใ‚Š ใพใ—ใŸใ€‚ ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใƒ“ใ‚ธใƒฅใ‚ขใƒซ้ƒจ้–€ใงๅƒใ„ใฆใ„ใพใ—
07:24
the audio visual department. So I worked with equipment that
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ใŸใ€‚ ใใฎใŸใ‚ใ€ใƒ“ใƒ‡ใ‚ช
07:29
was used for audio as well as for video. So sound because it
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ใ ใ‘ใงใชใใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชใซใ‚‚ไฝฟ็”จใ•ใ‚Œใ‚‹ๆฉŸๅ™จใ‚’ไฝฟ็”จใ—ใพใ—ใŸ ใ€‚ ้Ÿณ
07:35
travels in waves has a speed. And the speed of sound at my
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ใฏๆณขใงไผใ‚ใ‚‹ใฎใง้€Ÿใ•ใŒใ‚ใ‚Šใพใ™ใ€‚ ็งใฎ็†่งฃใงใฏใ€้Ÿณ้€Ÿใฏ
07:40
understanding is 343 meters per second. But I think that's at
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ๆฏŽ็ง’343ใƒกใƒผใƒˆใƒซใงใ™ ใ€‚ ใ—ใ‹ใ—ใ€ใใ‚Œใฏๆ‘‚ๆฐ20ๅบฆใ ใจๆ€ใ„ใพใ™
07:45
20 ยฐ Celsius. And maybe that's at sea level. Correct me if I'm
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ใ€‚ ใใ—ใฆๅคšๅˆ†ใใ‚Œ ใฏๆตท้ขใซใ‚ใ‚Šใพใ™ใ€‚ ็งใŒ้–“้•ใฃใฆใ„ใ‚‹ๅ ดๅˆใฏไฟฎๆญฃใ—ใฆใใ ใ•ใ„
07:50
wrong. Again this is not an English lesson. But sound
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ใ€‚ ็นฐใ‚Š่ฟ”ใ—ใพใ™ใŒใ€ใ“ใ‚Œใฏ ่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใงใฏใ‚ใ‚Šใพใ›ใ‚“ใ€‚ ใ—ใ‹ใ—ใ€
07:54
travels at a certain speed. Um and so when you say something
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้Ÿณใซใฏไธ€ๅฎšใฎ้€ŸๅบฆใŒใ‚ใ‚Šใพใ™ใ€‚ ใˆใˆใจ ใ€ใ‚ใชใŸใŒไฝ•ใ‹ใ‚’่จ€ใ†ใจใ
07:59
it actually takes a split second for it to get to some
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ใ€ใใ‚ŒใŒ
08:03
one's ear. You can hear this if you are somewhere where you're
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่ชฐใ‹ใฎ่€ณใซๅฑŠใใฎใซๅฎŸ้š›ใซใฏไธ€็žฌใ‹ใ‹ใ‚Šใพใ™. ้ ใใฎ่ชฐใ‹ใซๆ€’้ณดใฃใฆใ„ใ‚‹ๅ ดๆ‰€ใซใ„ใ‚‹ใจใ€ใ“ใ‚Œใ‚’่žใใ“ใจใŒใงใใพใ™
08:07
yelling at someone far away. Um or if you see something happen
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ใ€‚ ใˆใˆใจ ใ€ไฝ•ใ‹ใŒ
08:12
far away that's loud. You won't hear the sound immediately
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้ ใใง่ตทใ“ใฃใฆใ„ใ‚‹ใฎใ‚’่ฆ‹ใŸใ‚‰ใ€ใใ‚Œใฏใ†ใ‚‹ใ•ใ„ใงใ™ใ€‚
08:16
because the speed of sound requires a certain amount of
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้Ÿณ้€Ÿใ‚„่€ณใซๅฑŠใใพใง ใซๆ™‚้–“ใŒใ‹ใ‹ใ‚‹ใŸใ‚ใ€ใ™ใใซใฏ่žใ“ใˆใพใ›ใ‚“
08:21
time or that sound to arrive at your ears. But speed of sound
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ใ€‚ ใ—ใ‹ใ—ใ€้Ÿณ้€ŸใŒ
08:27
I'm not sure what it is in kilometres. I think it's over
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ไฝ•ใ‚ญใƒญใƒกใƒผใƒˆใƒซใ‹ใฏใ‚ใ‹ใ‚Šใพใ›ใ‚“ ใ€‚ ็ง’้€Ÿ1200kmไปฅไธŠใ ใจๆ€ใ„
08:29
twelve hundred kilometres per second or something like that.
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ใพใ™ใ€‚
08:33
Don't quote me on it. Um oh yeah Would be wouldn't it? No.
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ใใ‚Œใซใคใ„ใฆ็งใ‚’ๅผ•็”จใ—ใชใ„ใงใใ ใ•ใ„ใ€‚ ใ†ใƒผใ‚“ใ€ ใใ†ใ ใ‚ใ†ใญใ€‚ No.
08:37
1, 200 kilometres an hour. See again not a science lesson at
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1ใ€ๆ™‚้€Ÿ200ใ‚ญใƒญใ€‚ ็ง‘ๅญฆใฎๆŽˆๆฅญใงใฏใ‚ใ‚Šใพใ›
08:41
all. There's something called the sound barrier. So when an
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ใ‚“ใ€‚ ้˜ฒ้Ÿณๅฃใจใ„ใ†ใ‚‚ใฎใŒใ‚ใ‚Š ใพใ™ใ€‚ ใใฎใŸใ‚ใ€
08:47
airplane goes faster than the speed of sound they need to get
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้ฃ›่กŒๆฉŸใŒ้Ÿณ้€Ÿใ‚’่ถ…ใˆใ‚‹ๅ ดๅˆใฏใ€ ้Ÿณ้€Ÿใฎๅฃใ‚’้€š้Žใ™ใ‚‹ๅฟ…่ฆใŒใ‚ใ‚Š
08:52
through the sound barrier. The faster a vehicle usually an
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ใพใ™ใ€‚ ไน—ใ‚Š็‰ฉใŒ้€Ÿใ„ใปใฉใ€้€šๅธธใฏ
08:57
airplane because they're the only things that really go that
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้ฃ›่กŒๆฉŸใงใ™ใ€‚ใชใœใชใ‚‰ใ€้ฃ›่กŒๆฉŸ ใ ใ‘ใŒๆœฌๅฝ“ใซ
09:00
fast. When a vehicle or when an airplane gets close to the
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้€Ÿใ่ตฐใ‚‹ใ‹ใ‚‰ใงใ™ใ€‚ ไน—ใ‚Š็‰ฉใ‚„ ้ฃ›่กŒๆฉŸใŒ้Ÿณ้€Ÿใซ่ฟ‘ใฅใใจใ€
09:04
speed of sound the sound waves start to compress in front of
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้ŸณๆณขใŒใใฎ ๅ‰ใงๅœง็ธฎใ•ใ‚Œๅง‹ใ‚ใ€
09:08
it and it's kind of like a barrier. And once they get
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ไธ€็จฎใฎ้šœๅฃใฎใ‚ˆใ†ใซใชใ‚Š ใพใ™. ใใ—ใฆใ€ๅฝผใ‚‰
09:12
through it I think it's There's less turbulence. I don't know
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ใŒใใ‚Œใ‚’ไน—ใ‚Š่ถŠใˆใ‚‹ใจใ€ไนฑๆฐ—ๆตใŒๅฐ‘ใชใใชใ‚‹ใจๆ€ใ„ใพใ™ ใ€‚
09:17
all the details but I do know that for a long time airplanes
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่ฉณ็ดฐใฏใ‚ใ‹ใ‚Šใพใ›ใ‚“ ใŒใ€้•ทใ„้–“้ฃ›่กŒๆฉŸ
09:21
never broke the sound barrier. But eventually I think it was
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ใŒ้Ÿณ้€Ÿใฎๅฃใ‚’็ ดใฃใŸใ“ใจใŒใชใ„ใ“ใจใฏ็Ÿฅใฃใฆใ„ใพใ™ใ€‚ ใงใ‚‚ๆœ€็ต‚็š„ใซใฏใƒใƒฃใƒƒใ‚ฏใƒปใ‚คใ‚งใƒผใ‚ฌใƒผใ ใฃใŸใจๆ€ใ„ใพใ™
09:25
Chuck Yeager. Maybe Brent's here in Cantelli's. Um
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ใ€‚ ใƒ–ใƒฌใƒณใƒˆใฏใ“ใ“ใ‚ซใƒณใƒ†ใƒƒใƒชใฎๅฎถใซใ„ใ‚‹ใฎใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ ใ€‚ ใˆใˆใจใ€
09:28
eventually they were able to break the sound barrier. They
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ๆœ€็ต‚็š„ใซๅฝผใ‚‰ใฏ้Ÿณใฎๅฃใ‚’็ ดใ‚‹ใ“ใจใŒใงใใพใ—ใŸ ใ€‚ ๅฝผใ‚‰
09:31
were able to design a plane. Um that could go faster than the
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ใฏ้ฃ›่กŒๆฉŸใ‚’่จญ่จˆใ™ใ‚‹ใ“ใจใŒใงใใพใ—ใŸใ€‚ ใˆใˆใจ ใ€ใใ‚Œใฏ้Ÿณ้€Ÿใ‚ˆใ‚Šใ‚‚้€Ÿใใชใ‚‹ๅฏ่ƒฝๆ€งใŒ
09:37
speed of sound. Sound check. Testing one two. Testing 123.
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ใ‚ใ‚Šใพใ™ใ€‚ ้Ÿณ้‡ใƒใ‚งใƒƒใ‚ฏใ€‚ 1 ใค 2 ใคใ‚’ใƒ†ใ‚นใƒˆใ—ใพใ™ใ€‚ ใƒ†ใ‚นใƒˆ 123.
09:43
Or check one two. Check one two. Check one23. A sound check
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ใพใŸใฏ 1 ใค 2 ใคใ‚’ใƒใ‚งใƒƒใ‚ฏใ—ใพใ™ใ€‚ ใƒฏใƒณใƒ„ใƒผใƒใ‚งใƒƒใ‚ฏ ใ€‚ one23ใ‚’ใƒใ‚งใƒƒใ‚ฏใ—ใฆใใ ใ•ใ„ใ€‚
09:47
something that people do before they start using a microphone.
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ใƒžใ‚คใ‚ฏใ‚’ไฝฟใ„ๅง‹ใ‚ใ‚‹ๅ‰ใซ่กŒใ†ใ‚ตใ‚ฆใƒณใƒ‰ใƒใ‚งใƒƒใ‚ฏใ€‚
09:52
So when I am about to start my English lesson I sometimes tap
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ใ ใ‹ใ‚‰ใ€่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใ‚’ๅง‹ใ‚ใ‚ˆใ†ใจใ—ใฆใ„ใ‚‹ใจใใซใ€ใƒžใ‚คใ‚ฏใ‚’ ใ‚ฟใƒƒใƒ—ใ™ใ‚‹ใ“ใจใŒใ‚ใ‚Š
09:57
my mic. And then on my screen I can see that the mic is
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ใพใ™ใ€‚ ใใ—ใฆใ€็”ป้ข ใงใƒžใ‚คใ‚ฏใŒๆฉŸ่ƒฝใ—ใฆใ„ใ‚‹ใ“ใจใŒใ‚ใ‹ใ‚Š
10:01
working. So it's a very subtle sound check. I don't do this. I
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ใพใ™ใ€‚ ใจใ„ใ†ใ‚ใ‘ใงใ€ใจใฆใ‚‚ๅพฎๅฆ™ใช ใ‚ตใ‚ฆใƒณใƒ‰ใƒใ‚งใƒƒใ‚ฏใงใ™ใ€‚ ็งใฏใ“ใ‚Œใ‚’ใ—ใพใ›ใ‚“ใ€‚ ็ง
10:05
don't go testing testing 12three testing. But that is
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ใฏ12threeใƒ†ใ‚นใƒˆใ‚’ใƒ†ใ‚นใƒˆใ—ใพใ›ใ‚“ ใ€‚ ใ—ใ‹ใ—ใ€ใใ‚Œใฏ
10:10
something you might hear if you go to a show early. You might
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ใ‚ทใƒงใƒผใซๆ—ฉใ่กŒใใจ่žใ“ใˆใ‚‹ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚
10:15
see a sound technician or an audio technician do a sound
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ใ‚ตใ‚ฆใƒณใƒ‰ๆŠ€่ก“่€…ใพใŸใฏ ใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชๆŠ€่ก“่€…ใŒใ‚ตใ‚ฆใƒณใƒ‰
10:19
check and they'll go check testing testing 123 and they
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ใƒใ‚งใƒƒใ‚ฏใ‚’่กŒใฃใฆใ„ใ‚‹ใฎใ‚’็›ฎใซใ™ใ‚‹
10:23
might tap the mic a little bit. Does that hurt your ears? Sorry
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ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚ๅฝผใ‚‰ใฏใƒ†ใ‚นใƒˆ ใƒ†ใ‚นใƒˆ 123 ใ‚’ใƒใ‚งใƒƒใ‚ฏใ—ใ€ใƒžใ‚คใ‚ฏใ‚’ๅฐ‘ใ—ๅฉใใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚ ใใ‚Œใฃใฆ่€ณใŒ็—›ใ„ใฎ๏ผŸ
10:26
if you have ear earbuds on and that makes too loud of a sound.
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ใ‚คใƒคใƒ•ใ‚ฉใƒณใ‚’่ฃ…็€ ใ—ใฆใ„ใฆใ€้ŸณใŒๅคงใใ™ใŽใ‚‹ๅ ดๅˆใฏ็”ณใ—่จณใ‚ใ‚Šใพใ›ใ‚“ใ€‚
10:31
But that is called sound check. Let's describe sounds for a
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ใ—ใ‹ใ—ใ€ใใ‚Œใฏใ‚ตใ‚ฆใƒณใƒ‰ใƒใ‚งใƒƒใ‚ฏใจๅ‘ผใฐใ‚Œใฆใ„ใพใ™ใ€‚ ้Ÿณใซใคใ„ใฆๅฐ‘ใ—่ชฌๆ˜Žใ—ใพใ—ใ‚‡ใ†
10:36
little bit. When there is a sound that almost hurts your
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ใ€‚ ่€ณใŒ็—›ใใชใ‚Šใใ†ใช้ŸณใŒใ‚ใ‚‹ใจใ
10:41
ears you would say it is loud. When an airplane takes off it
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ใฏใ€ใ†ใ‚‹ใ•ใ„ใจ่จ€ใ†ใงใ—ใ‚‡ใ†ใ€‚ ้ฃ›่กŒๆฉŸใŒ้›ข้™ธใ™ใ‚‹ใจใ
10:45
is loud. When you go to a rock concert it is loud. When the
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ใฏใ†ใ‚‹ใ•ใ„ใงใ™ใ€‚ ใƒญใƒƒใ‚ฏ ใ‚ณใƒณใ‚ตใƒผใƒˆใซ่กŒใใจใ†ใ‚‹ใ•ใ„ใงใ™ใ€‚ ใƒ†ใƒฌใƒ“ใฎ
10:51
volume is really really high on your television. We say that
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้Ÿณ้‡ใŒๆœฌๅฝ“ใซๅคงใใ„ ใจใใ€‚ ็งใŸใกใฏ
10:54
the TV is too loud. Uh when people yell it is loud. So when
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ใ€ใƒ†ใƒฌใƒ“ใŒๅคงใใ™ใŽใ‚‹ใจ่จ€ใ„ใพใ™ใ€‚ ใˆใˆใจใ€ ไบบใ€…ใŒๅซใถใจใใ€ใใ‚Œใฏๅคงๅฃฐใงใ™ใ€‚ ใ ใ‹ใ‚‰ใ€
10:59
you are loud you are making noises where the volume is just
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ใ‚ใชใŸใŒๅคงๅฃฐใง่ฉฑใ™ใจใใ€ใ‚ใชใŸใฏ้Ÿณ้‡ใŒ้žๅธธใซ้ซ˜ใ„ๅ ดๆ‰€ใง้Ÿณใ‚’็ซ‹ใฆใฆใ„ใ‚‹ใฎ
11:06
really really high. And then of course the opposite is is
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ใงใ™ใ€‚ ใใ—ใฆ ใ‚‚ใกใ‚ใ‚“ใใฎๅๅฏพใฏ
11:10
quiet. When you're quiet you these girls are whispering to
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้™ใ‹ใงใ™ใ€‚ ใ‚ใชใŸใŒ้™ใ‹ใซใ—ใฆใ„ใ‚‹ใจใใ€ ใ“ใ‚Œใ‚‰ใฎๅฅณใฎๅญใฏ
11:15
each other. So when you are quiet the volume is very very
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ใŠไบ’ใ„ใซใ•ใ•ใ‚„ใๅˆใฃใฆใ„ใพใ™ใ€‚ ใใฎใŸใ‚ใ€ ้™ใ‹ใชใจใใฏ้Ÿณ้‡ใŒ้žๅธธใซ
11:20
low. You're talking quietly you're talking softly. There's
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ๅฐใ•ใใชใ‚Šใพใ™ใ€‚ ใ‚ใชใŸใฏ้™ใ‹ใซ่ฉฑใ—ใฆใ„ใ‚‹ ใ‚ใชใŸใฏ้™ใ‹ใซ่ฉฑใ—ใฆใ„ใ‚‹. ่‹ฑ่ชž
11:24
a few ways to describe it in English. But Certainly if you
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ใง่ชฌๆ˜Žใ™ใ‚‹ๆ–นๆณ•ใฏใ„ใใคใ‹ใ‚ใ‚Šใพใ™ ใ€‚ ใงใ‚‚็ขบใ‹
11:27
imagine when a cat walks by it's very quiet. If you listen
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ใซใ€็ŒซใŒ้€šใ‚Š้ŽใŽใ‚‹ๆ™‚ใ‚’ๆƒณๅƒใ™ใ‚‹ใจใ€ ใจใฆใ‚‚้™ใ‹ใงใ™ใ€‚
11:33
closely you can hear its feet. But because its feet are padded
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ใ‚ˆใ่žใใจ่ถณ้ŸณใŒ่žใ“ใˆใพใ™ใ€‚ ใงใ‚‚ใ€่ถณใซใƒ‘ใƒƒใƒ‰ใŒๅ…ฅใฃใฆใ„ใ‚‹ใฎใง
11:37
it's very quiet when a cat walks by. Um when our dog
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ใ€็ŒซใŒ้€šใ‚Š้ŽใŽใ‚‹ใจใจใฆใ‚‚้™ใ‹ ใงใ™ใ€‚ ใ†ใƒผใ‚“ใ€ใ†ใกใฎ็Šฌใฎใ‚ฆใ‚ฉใƒซใ‚ฟใƒผใŒ้€šใ‚Š้ŽใŽใ‚‹ใจใใ€
11:41
Walter runs by it's not quiet. It's very loud. He's a big loud
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้™ใ‹ใ˜ใ‚ƒใชใ„ใ€‚ ใจใฆใ‚‚ใ†ใ‚‹ใ•ใ„ใงใ™ใ€‚ ๅฝผใฏๅคงใใช้จ’ใ€…ใ—ใ„
11:45
dog. So quiet and loud are opposites of each other. And
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็Šฌใงใ™ใ€‚ ้™ใ‹ใ•ใจใ†ใ‚‹ใ•ใ•ใฏ ็›ธๅใ™ใ‚‹ใ‚‚ใฎใงใ™ใ€‚ ใใ—ใฆ
11:52
that's because of what's called pitch. And I'm not going to get
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ใ€ใใ‚Œใฏใƒ”ใƒƒใƒใจๅ‘ผใฐใ‚Œใ‚‹ใ‚‚ใฎใฎใŸใ‚ใงใ™ ใ€‚ ใใ—ใฆใ€็งใฏใ™ในใฆใฎ่ฉณ็ดฐใซ็ซ‹ใกๅ…ฅใ‚‹ใคใ‚‚ใ‚Šใฏใ‚ใ‚Šใพใ›ใ‚“
11:57
into all the details. But because sound travels in waves
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ใ€‚ ใ—ใ‹ใ— ใ€้Ÿณใฏๆณข
12:01
there's a different frequency. There's a different size of the
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ใงไผใ‚ใ‚‹ใฎใงใ€็•ฐใชใ‚‹ๅ‘จๆณขๆ•ฐใŒใ‚ใ‚Šใพใ™ใ€‚ ๆณขใฎ ๅคงใใ•ใŒ้•ใ„ใพใ™
12:06
wave. When the wave is longer and has more amplitude again
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ใ€‚ ๆณขใŒ้•ทใ ใชใ‚Šใ€ๆŒฏๅน…ใŒๅคงใใใชใ‚‹ใจ
12:11
not a science lesson. You have a lower pitched sound. So when
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ใ€็ง‘ๅญฆใฎๆ•™่จ“ใซใฏใชใ‚Šใพใ›ใ‚“ใ€‚ ใ‚ใชใŸ ใฏไฝŽ้ŸณๅŸŸใฎ้Ÿณใ‚’ๆŒใฃใฆใ„ใพใ™ใ€‚ ใ ใ‹ใ‚‰
12:15
I talk like this the waves coming out of my mouth are much
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ใ“ใ†่ฉฑใ™ ใจใ€ๅฃใ‹ใ‚‰ๅ‡บใฆใใ‚‹ๆณขใŒใšใฃใจ
12:21
longer. And when I talk like this the sound waves Coming out
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้•ทใใชใ‚‹ใ‚“ใงใ™ใ€‚ ใใ—ใฆใ€็งใŒใ“ใฎใ‚ˆใ†ใซ่ฉฑใ™ใจใใ€็งใฎๅฃ ใ‹ใ‚‰ๅ‡บใฆใใ‚‹้Ÿณๆณข
12:25
of my mouth are much more like the one that says higher pitch.
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ใฏใ€ใ‚ˆใ‚Š้ซ˜ใ„ใƒ”ใƒƒใƒใ‚’่จ€ใ†ใ‚‚ใฎใซใฏใ‚‹ใ‹ใซไผผใฆใ„ใพใ™.
12:31
So that is what pitch is. It's a change in the an in how the
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ใใ‚ŒใŒใƒ”ใƒƒใƒใงใ™ใ€‚ ใใ‚Œ ใฏ้ŸณๆณขใŒใฉใฎใ‚ˆใ†ใซ่ฆ‹ใˆใ‚‹ใ‹ใฎๅค‰ๅŒ–ใง
12:37
sound wave looks and then our ears interpret that in a
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ใ‚ใ‚Šใ€็งใŸใกใฎ ่€ณใฏใใ‚Œใ‚’
12:41
different way. Uh let's see here. So dogs can hear high
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ๅˆฅใฎๆ–นๆณ•ใง่งฃ้‡ˆใ—ใพใ™. ใˆใฃใจใ€ใ“ใ“ใง่ฆ‹ใฆใฟใพใ—ใ‚‡ใ† ใ€‚ ใใฎใŸใ‚ใ€็Šฌใฏ้ซ˜ใ„้Ÿณใ‚’่žใใ“ใจใŒใงใใพใ™
12:48
pitched sounds. There's actually sounds that are so
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ใ€‚
12:52
high pitch that humans can't hear it. Um but dogs can. So
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ไบบ้–“ใซใฏ่žใ“ใˆใชใ„ใปใฉ้ซ˜ใ„้Ÿณใ‚‚ใ‚ใ‚‹ ใ€‚ ใˆใˆใจใ€็Šฌใฏใงใใพใ™ใ€‚ ใใฎใŸใ‚
12:57
sometimes your dog will be looking around because possibly
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ใ€็Šฌใฏไบบ้–“ใฎๅฏ่ด็ฏ„ๅ›ฒๅค–
13:01
they hear a sound that is outside of the range of human
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ใฎ้Ÿณใ‚’่žใ„ใฆใ„ใ‚‹ๅฏ่ƒฝๆ€งใŒใ‚ใ‚‹ใŸใ‚ใ€ๅ‘จใ‚Šใ‚’่ฆ‹ๅ›žใ™ใ“ใจใŒใ‚ใ‚Šใพใ™
13:07
hearing. By the way humans can hear from I think 20 to
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ใ€‚ ใกใชใฟใซไบบ้–“ใŒ ่žใ“ใˆใ‚‹็ฏ„ๅ›ฒใฏ2ไธ‡ใƒ˜ใƒซใƒ„ใ‹ใ‚‰2ไธ‡ใƒ˜ใƒซใƒ„ใใ‚‰ใ„ใ ใจๆ€ใ„ใพใ™
13:11
20thousand hertz or something like that. 20 hertz to 20, 000
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ใ€‚ 20 ใƒ˜ใƒซใƒ„ใ‹ใ‚‰ 20,000
13:14
hertz. Uh I might be getting the actual description wrong.
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ใƒ˜ใƒซใƒ„ใ€‚ ใˆใˆใจ ใ€ๅฎŸ้š›ใฎ่ชฌๆ˜ŽใŒ้–“้•ใฃใฆใ„ใ‚‹ๅฏ่ƒฝๆ€งใŒใ‚ใ‚Šใพใ™ใ€‚
13:18
Someone who's more scientific can contribute that
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ใ‚ˆใ‚Š็ง‘ๅญฆ็š„ใชไบบ ใŒใใฎ
13:22
information. So we have when we talk about high pitched and low
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ๆƒ…ๅ ฑใ‚’ๆไพ›ใงใใพใ™ใ€‚ ใงใ™ใ‹ใ‚‰ใ€ ้ซ˜้ŸณใจไฝŽ้Ÿณใซใคใ„ใฆ่ฉฑใ™ใจใใ‚‚ใใ†
13:28
pitched sounds. We also sometimes refer to them as bass
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ใงใ™ใ€‚ ใพใŸ ใ€ไฝŽ้Ÿณใ‚„ใƒˆใƒฉใƒ–ใƒซใจๅ‘ผใฐใ‚Œใ‚‹ใ“ใจใ‚‚ใ‚ใ‚Šใพใ™
13:32
and trouble. So bass again is something referring to the low
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ใ€‚ ใคใพใ‚Šใ€ไฝŽ้ŸณใฏไฝŽ้Ÿณ ใ‚’ๆŒ‡ใ™ใ‚‚ใฎ
13:37
sounds. Often when you listen to music you might turn up the
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ใงใ™ใ€‚ ้Ÿณๆฅฝใ‚’่ดใ„ใฆใ„ใ‚‹ใจใใฏใ€ไฝŽ้Ÿณใ‚’ๅคงใใใ™ใ‚‹ใ“ใจใŒใ‚ˆใใ‚ใ‚Šใพใ™
13:42
bass. Sometimes you'll hear a cargo by that has really large
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ใ€‚ ใจใใฉใใ€ ้žๅธธใซๅคงใใชใ‚นใƒ”ใƒผใ‚ซใƒผใ‚’ๆญ่ผ‰ใ—ใŸ่ฒจ็‰ฉใฎ้ŸณใŒ่žใ“ใˆใ‚‹
13:46
speakers in it. So it can create really good bass sounds
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ใ“ใจใŒใ‚ใ‚Šใพใ™ใ€‚ ใใฎใŸใ‚ใ€้Ÿณๆฅฝใ‚’ๅ†็”Ÿ ใ™ใ‚‹ใจใ€้žๅธธใซๅ„ชใ‚ŒใŸใƒ™ใƒผใ‚น ใ‚ตใ‚ฆใƒณใƒ‰ใ‚’ไฝœๆˆใงใใพใ™
13:51
when it plays music. And that person might turn up the bass.
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ใ€‚ ใใ—ใฆใ€ใใฎ ไบบใฏไฝŽ้Ÿณใ‚’ไธŠใ’ใ‚‹ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚
13:55
Um in or for you to hear it. So when you hear a car go by and
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ใˆใˆใจใ€ใพใŸใฏใ‚ใชใŸใŒใใ‚Œใ‚’่žใใŸใ‚ใซใ€‚ ่ปŠใŒ้€šใ‚Š้ŽใŽใ‚‹ใฎใ‚’่žใใจใ€
13:59
it's like when the car goes by you can really hear the bass in
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่ปŠใŒ้€šใ‚Š้ŽใŽใ‚‹ใจใใฎใ‚ˆใ†ใซใ€
14:04
the song they've probably turned up the knob that says
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ๆ›ฒใฎไฝŽ้Ÿณ
14:08
bass and then treble if you hear a song and you really hear
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ใŒๅฎŸ้š›ใซ่žใ“ใˆใพใ™ใ€‚ๆ›ฒใ‚’่žใ„ใฆใ‚ทใƒณใƒใƒซใŒๅฎŸ้š›ใซ่žใ“ใˆใ‚‹ๅ ดๅˆใฏใ€ไฝŽ้Ÿณใจ้ซ˜้ŸณใฎใƒŽใƒ–ใ‚’ไธŠใ’ใŸๅฏ่ƒฝๆ€งใŒใ‚ใ‚Šใพใ™ใ€‚
14:14
the cymbals or like if you hear all those really high sounds
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ใพใŸใฏ ใ€ใ“ใ‚Œใ‚‰ใฎ้žๅธธใซ้ซ˜ใ„้ŸณใŒใ™ในใฆ่žใ“ใˆใ‚‹ๅ ดๅˆ
14:20
it's possible that they have turned up the treble. So on a
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ใ€้ซ˜้ŸณๅŸŸใŒไธŠใŒใฃใฆใ„ใ‚‹ๅฏ่ƒฝๆ€งใŒใ‚ใ‚Šใพใ™ใ€‚ ใใฎ
14:25
piece of audio equipment on a radio you might have a knob to
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ใŸใ‚ใ€ใƒฉใ‚ธใ‚ชใฎใ‚ชใƒผใƒ‡ใ‚ฃใ‚ชๆฉŸๅ™จใซใฏ
14:29
turn up or turn down the bass or turn up or turn down the
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ใ€ไฝŽ้Ÿณ ใ‚’ไธŠใ’ใŸใ‚Šไธ‹ใ’ใŸใ‚Šใ€้ซ˜้Ÿณใ‚’ไธŠใ’ใŸใ‚Šไธ‹ใ’ใŸใ‚Šใ™ใ‚‹ใƒŽใƒ–ใŒใ‚ใ‚‹ๅ ดๅˆใŒใ‚ใ‚Šใพใ™
14:33
treble. And then sound is measured using something called
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ใ€‚ ใใ—ใฆใ€ใƒ‡ใ‚ทใƒ™ใƒซใ‚นใ‚ฑใƒผใƒซ ใจๅ‘ผใฐใ‚Œใ‚‹ใ‚‚ใฎใ‚’ไฝฟ็”จใ—ใฆ้Ÿณใ‚’ๆธฌๅฎšใ—ใพใ™
14:39
the decibel scale. We usually say that sound is a certain
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ใ€‚ ็งใŸใกใฏ้€šๅธธ ใ€้Ÿณใฏไธ€ๅฎš
14:43
amount of decibels. If you look here you'll see that you know a
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้‡ใฎใƒ‡ใ‚ทใƒ™ใƒซใงใ‚ใ‚‹ใจ่จ€ใ„ใพใ™ใ€‚ ใ“ใ“ใ‚’่ฆ‹ใ‚‹ใจใ€
14:48
heavy metal concert has very high there's a lot of decibels
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ใƒ˜ใƒดใ‚ฃใƒกใ‚ฟใƒซใฎใ‚ณใƒณใ‚ตใƒผใƒˆใฏ้žๅธธใซ ้ซ˜ใ„้Ÿณใงใ€ๅคšใใฎใƒ‡ใ‚ทใƒ™ใƒซใŒๅซใพ
14:52
in the sound. The sound is very very loud. And it's actually
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ใ‚Œใฆใ„ใ‚‹ใ“ใจใŒใ‚ใ‹ใ‚Šใพใ™ใ€‚ ้Ÿณใฏ ใจใฆใ‚‚ใ†ใ‚‹ใ•ใ„ใงใ™ใ€‚ ใใ—ใฆใ€ใใ‚ŒใฏๅฎŸ้š›
14:58
can be damaging to your ears. When I worked in construction
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ใซใ‚ใชใŸใฎ่€ณใซๆๅ‚ทใ‚’ไธŽใˆใ‚‹ๅฏ่ƒฝๆ€งใŒใ‚ใ‚Šใพใ™. ็งใŒๅปบ่จญใงๅƒใ„ใฆใ„ใŸใจใใ€ใƒ‡ใ‚ทใƒ™ใƒซใŒๅคšใ™ใŽใ‚‹ใŸใ‚ใ€่ด่ฆšไฟ่ญทใฎใŸใ‚ใซไฝฟ็”จใ™ใ‚‹
15:02
there were certain tools we would use that where we would
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็‰นๅฎšใฎใƒ„ใƒผใƒซใŒใ‚ใ‚Šใพใ—ใŸ
15:06
where hearing protection because they put out too many
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15:09
decibels. They were too loud for the human ear. This live
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ใ€‚ ๅฝผใ‚‰ใฏ ไบบ้–“ใฎ่€ณใซใฏๅคงใใ™ใŽใพใ—ใŸใ€‚
15:15
stream this English lesson is probably more at around
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ใ“ใฎ่‹ฑ่ชžใƒฌใƒƒใ‚นใƒณใฎใƒฉใ‚คใƒ– ใ‚นใƒˆใƒชใƒผใƒ ใฏใ€ ใŠใใ‚‰ใ
15:18
conversation level. If you look in the orange in the middle on
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ไผš่ฉฑใƒฌใƒ™ใƒซใซ่ฟ‘ใ„ใ‚‚ใฎใงใ™ใ€‚ ใ‚นใ‚ฑใƒผใƒซ ใฎ็œŸใ‚“ไธญใซใ‚ใ‚‹ใ‚ชใƒฌใƒณใ‚ธ่‰ฒใ‚’่ฆ‹ใฆใใ ใ•ใ„
15:22
the scale. It's at conversation level. So decibel is the unit
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ใ€‚ ไผš่ฉฑ ใƒฌใƒ™ใƒซใงใ™ใ€‚ ใ—ใŸใŒใฃใฆใ€ใƒ‡ใ‚ทใƒ™ใƒซใฏใ€้Ÿณใฎ
15:28
of measure for measuring how loud sound is. And we also have
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ๅคงใใ•ใ‚’ๆธฌๅฎšใ™ใ‚‹ใŸใ‚ใฎๆธฌๅฎšๅ˜ไฝ ใงใ™ใ€‚ ใพใŸ
15:36
what's called a sound effect. Sometimes I do sound effects.
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ใ€ๅŠนๆžœ้Ÿณใจๅ‘ผใฐใ‚Œใ‚‹ใ‚‚ใฎใ‚‚ใ‚ใ‚Šใพใ™ใ€‚ ใŸใพใซๅŠนๆžœ้Ÿณใ‚‚ใ‚„ใฃใฆใพใ™ใ€‚
15:40
Sound effects when you do a sound effect you are recreating
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ๅŠนๆžœ้Ÿณใ‚’่กŒใ†ใจใ€ๅˆฅใฎ ้Ÿณใ‚’ๅ†็พ
15:45
the sound of something else. A long time ago when they were
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ใ™ใ‚‹ใ“ใจใซใชใ‚Šใพใ™ใ€‚ ๆ˜”ใ€ๅฝผใ‚‰ใŒๆ˜ ็”ปใ‚’ไฝœใฃใฆใ„ใŸใจใใ€ๅฝผใ‚‰ใŒ้ฆฌ
15:49
making movies and if they needed to create the sound of
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ใฎ้Ÿณใ‚’ๅ‡บใ™ๅฟ…่ฆใŒใ‚ใ‚Œใฐใ€ใ“ใ“
15:53
horses let me see if I can do it here. I don't have coconuts.
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ใงใงใใ‚‹ใ‹ใฉใ†ใ‹่ฉฆใ—ใฆใฟ ใพใ—ใŸใ€‚ ็งใฏใ‚ณใ‚ณใƒŠใƒƒใƒ„ใ‚’ๆŒใฃใฆใ„ใพใ›ใ‚“ใ€‚
15:56
Uh they would pretend these are coconuts. And then they would
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ใˆใˆใจใ€ๅฝผใ‚‰ใฏใ“ใ‚Œใ‚‰ใŒใ‚ณใ‚ณใƒŠใƒƒใƒ„ใฎใตใ‚Šใ‚’ใ™ใ‚‹ใงใ—ใ‚‡ใ† . ใใ—ใฆใ€ๅฝผใ‚‰ใฏ
15:59
go like that does not sound like a horse but they would use
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ใใ‚ŒใŒ้ฆฌใฎใ‚ˆใ†ใซ่žใ“ใˆใชใ„ใ‚ˆใ†ใซใ— ใพใ™ใŒใ€
16:06
coconuts or two coconut halves to kind of recreate the sound
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ใ‚ณใ‚ณใƒŠใƒƒใƒ„ใพใŸใฏ2ใคใฎใ‚ณใ‚ณใƒŠใƒƒใƒ„ใฎๅŠๅˆ† ใ‚’ไฝฟ็”จใ—ใฆ
16:11
of a horse. When I was making the sound of a cat purring I'm
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ใ€้ฆฌใฎ้Ÿณใ‚’ๅ†็พใ—ใพใ™. ็Œซใฎ้ณดใๅฃฐใ‚’ๅ‡บใ—ใฆใ„ใŸใ‚‰
16:17
making a sound effect. It's not the original sound. It's just
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ๅŠนๆžœ้Ÿณใ‚’ๅ‡บใ—ใฆใ„ใพใ™ใ€‚ ๅŽŸ้Ÿณใงใฏใ‚ใ‚Šใพใ›ใ‚“ ใ€‚ ใ‚‚ใ†ไธ€ๅบฆ
16:22
an attempt to make the same sound again. So sound effects
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ๅŒใ˜้Ÿณใ‚’ๅ‡บใใ†ใจใ™ใ‚‹ใ ใ‘ ใงใ™ใ€‚ ๅŠนๆžœ
16:26
are one of the ways they recreate sounds for movies or
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้Ÿณใฏใ€ๆ˜ ็”ป
16:30
for podcasts or for English lessons like this.
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ใ‚„ใƒใƒƒใƒ‰ใ‚ญใƒฃใ‚นใƒˆใ€ใพใŸใฏ ใ“ใฎใ‚ˆใ†ใช่‹ฑ่ชžใฎใƒฌใƒƒใ‚นใƒณใฎ้Ÿณใ‚’ๅ†็พใ™ใ‚‹ๆ–นๆณ•ใฎ 1 ใคใงใ™ใ€‚
16:37
Mute. So there is a mute button on my mic. I'm not going to
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็„ก้Ÿณใ€‚ ใ ใ‹ใ‚‰็งใฎใƒžใ‚คใ‚ฏใซใฏใƒŸใƒฅใƒผใƒˆใƒœใ‚ฟใƒณใŒใ‚ใ‚Šใพใ™ ใ€‚ ็งใฏใใ‚Œใ‚’ๆŠผใ™ใคใ‚‚ใ‚Šใฏใ‚ใ‚Šใพใ›
16:41
push it. But a mute button is a button you push to stop all
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ใ‚“ใ€‚ ใŸใ ใ—ใ€ใƒŸใƒฅใƒผใƒˆ ใƒœใ‚ฟใƒณใฏใ€ ใ™ในใฆใฎ้Ÿณใ‚’ๆญขใ‚ใ‚‹ใŸใ‚ใซๆŠผใ™ใƒœใ‚ฟใƒณใงใ™
16:46
sound. When I'm watching TV my remote control for my TV has a
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ใ€‚ ใƒ†ใƒฌใƒ“ใ‚’่ฆ‹ใฆใ„ใ‚‹ใจใ ใ€ใƒ†ใƒฌใƒ“ใฎใƒชใƒขใ‚ณใƒณใซใฏๆถˆ้Ÿณใƒœใ‚ฟใƒณใŒไป˜ใ„ใฆใ„
16:53
mute button. If the phone rings I'll hit the mute button. Um
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ใพใ™ใ€‚ ้›ป่ฉฑใŒ้ณดใฃ ใŸใ‚‰ใƒŸใƒฅใƒผใƒˆใƒœใ‚ฟใƒณใ‚’ๆŠผใ—ใพใ™ใ€‚
16:57
and then immediately the television will stop making
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ใ™ใ‚‹ใจใ™ใใซ ใƒ†ใƒฌใƒ“ใฎ้ŸณใŒๅ‡บใชใใชใ‚Š
17:01
sound. When you are watching a YouTube video if you click on
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ใพใ™ใ€‚ YouTube ใƒ“ใƒ‡ใ‚ชใ‚’่ฆ‹ใฆใ„ใ‚‹ใจใ
17:05
the little speaker at the bottom you will mute the video.
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ใซใ€ไธ‹้ƒจใซใ‚ใ‚‹ๅฐใ•ใชใ‚นใƒ”ใƒผใ‚ซใƒผใ‚’ใ‚ฏใƒชใƒƒใ‚ฏ ใ™ใ‚‹ใจใ€ใƒ“ใƒ‡ใ‚ชใŒใƒŸใƒฅใƒผใƒˆใ•ใ‚Œใพใ™ใ€‚
17:08
The video will keep Playing but it will stop making sound. So
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ใƒ“ใƒ‡ใ‚ชใฏๅ†็”Ÿใ•ใ‚Œ็ถšใ‘ ใพใ™ใŒใ€้ŸณใŒๅ‡บใชใใชใ‚Šใพใ™ใ€‚ ใใฎ
17:12
the mute button is what you use to do that. To stop something
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ใŸใ‚ใซไฝฟ็”จใ™ใ‚‹ใฎใŒใƒŸใƒฅใƒผใƒˆ ใƒœใ‚ฟใƒณ ใงใ™ใ€‚ ไฝ•ใ‹
17:17
from making sound. Or when you talk about a microphone to stop
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ใŒ้Ÿณใ‚’็ซ‹ใฆใชใ„ใ‚ˆใ†ใซใ™ใ‚‹ใ“ใจใ€‚ ใพใŸใฏ ใ€ใƒžใ‚คใ‚ฏใซใคใ„ใฆ่ฉฑใ—ใฆใ„ใ‚‹ใจใใซใ€ใƒžใ‚คใ‚ฏใŒ
17:21
it from hearing you or listening to you. Um sometimes
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ใ‚ใชใŸใฎ ๅฃฐใ‚’่žใ„ใŸใ‚Š่žใ„ใŸใ‚Šใ—ใชใ„ใ‚ˆใ†ใซใ™ใ‚‹. ใˆใˆใจ
17:25
when you are in a Zoom meeting it's polite if there are lots
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ใ€ใ‚บใƒผใƒ ไผš่ญฐใซๅ‚ๅŠ ใ—ใฆใ„ใ‚‹ใจใ
17:28
of people in an online meeting to mute your microphone so
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ใซใ€ใ‚ชใƒณใƒฉใ‚คใƒณไผš่ญฐใซๅคšใใฎไบบใŒๅ‚ๅŠ ใ—ใฆ ใ„ใ‚‹ๅ ดๅˆใ€ใƒžใ‚คใ‚ฏใ‚’ใƒŸใƒฅใƒผใƒˆใ—ใฆใ€ๅ‘จๅ›ฒใ‚„ๅฎถใง
17:33
people don't hear what's happening around you or in your
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ไฝ•ใŒ่ตทใ“ใฃใฆใ„ใ‚‹ใฎใ‹ใŒ่žใ“ใˆใชใ„ใ‚ˆใ†ใซใ™ใ‚‹ใฎใŒ็คผๅ„€ๆญฃใ—ใ„ๅ ดๅˆใŒใ‚ใ‚Šใพใ™
17:37
house. Sound panel. A sound panel it can actually refer to
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. ใ‚ตใ‚ฆใƒณใƒ‰ใƒ‘ใƒใƒซใ€‚ ๅฎŸ้š›ใซใฏ
17:42
two things. But normally a sound panel refers to foam
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2ใคใฎใ“ใจใ‚’ๅ‚็…งใงใใ‚‹ใ‚ตใ‚ฆใƒณใƒ‰ใƒ‘ใƒใƒซใ€‚ ใ—ใ‹ใ—้€šๅธธใ€ ใ‚ตใ‚ฆใƒณใƒ‰ ใƒ‘ใƒใƒซใจใฏ
17:48
panels we put on the wall to dampen the sound and to reduce
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ใ€้Ÿณใ‚’ๆธ›่กฐใ•ใ›ใ€ใ‚จใ‚ณใƒผใ‚’ๆธ›ใ‚‰ใ™ใŸใ‚ใซๅฃใซ่จญ็ฝฎใ™ใ‚‹ใƒ•ใ‚ฉใƒผใƒ  ใƒ‘ใƒใƒซใ‚’ๆŒ‡ใ—
17:55
echo. Echo by the way is when you're like hey hey hey. Like
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ใพใ™ใ€‚ ใกใชใฟใซใ‚จใ‚ณใƒผใฏ ใƒ˜ใ‚คใƒ˜ใ‚คใƒ˜ใ‚คใฃใฆๆ„Ÿใ˜ใฎๆ™‚ใงใ™ใ€‚ ใŸใจใˆใฐ
18:00
if you're in a big room and you yell and your voice comes back
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ใ€ๅคงใใช้ƒจๅฑ‹ใง ๅคงๅฃฐใ‚’ๅ‡บใ™ใจใ€่‡ชๅˆ†ใฎๅฃฐใŒๆˆปใฃ
18:05
to you that's an echo. It's like hey hey. So if I was in a
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ใฆใใพใ™ใ€‚ใ“ใ‚ŒใŒๅ้Ÿฟใงใ™ใ€‚ ใƒ˜ใ‚คใƒ˜ใ‚คใฟใŸใ„ใชใ€‚ ใงใ™ใ‹ใ‚‰ใ€็งใŒ
18:09
cave you might hear an echo. Sound panels are used to stop
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ๆดž็ชŸใซใ„ใŸๅ ดๅˆใ€ๅ้ŸฟใŒ่žใ“ใˆใ‚‹ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“ใ€‚ ใ‚ตใ‚ฆใƒณใƒ‰ใƒ‘ใƒใƒซใฏใ€้ŸณใŒๅๅฐ„ใ™ใ‚‹ใฎใ‚’้˜ฒใใŸใ‚ใซไฝฟ็”จใ•ใ‚Œ
18:14
sound from reflecting. It absorbs the sound or deadens
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ใพใ™ใ€‚ ้Ÿณใ‚’ๅธๅŽใ—ใŸใ‚Šใ€ๅผฑใ‚ใŸใ‚Š
18:18
the sound. Um but a sound panel can also be the board with all
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ใ—ใพใ™ใ€‚ ใˆใˆใจใ€ใ‚ตใ‚ฆใƒณใƒ‰ ใƒ‘ใƒใƒซ ใฏใ€ใƒฌใ‚ณใƒผใƒ‡ใ‚ฃใƒณใ‚ฐ ใ‚นใ‚ฟใ‚ธใ‚ชใงไฝฟ็”จใ™ใ‚‹ใ™ในใฆใฎใƒŽใƒ–ใ‚’ๅ‚™ใˆใŸใƒœใƒผใƒ‰ใงใ‚‚ใ‚ใ‚Šใพใ™
18:23
the knobs that they use at a recording studio. We might call
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ใ€‚ ใใ‚Œใ‚‚ใ‚ตใ‚ฆใƒณใƒ‰ใƒ‘ใƒใƒซใจๅ‘ผในใ‚‹ใ‹ใ‚‚ใ—ใ‚Œใพใ›ใ‚“
18:27
that a sound panel as well. Um Volume. So this knob goes to
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ใ€‚ ใ†ใƒผใ‚“ ใƒœใƒชใƒฅใƒผใƒ ใ€‚ ใ—ใŸใŒใฃใฆใ€ใ“ใฎใƒŽใƒ–ใฏ
18:37
eleven. This is a secret joke. If you've seen a certain movie
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11 ใซใชใ‚Šใพใ™ใ€‚ ใ“ใ‚Œใฏ็ง˜ๅฏ†ใฎๅ†—่ซ‡ใงใ™ใ€‚ ็‰นๅฎšใฎๆ˜ ็”ปใ‚’่ฆ‹ใŸใ“ใจใŒใ‚ใ‚‹
18:40
you'll understand the reference. But volume refers to
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ๅ ดๅˆใฏใ€ๅ‚็…งใ‚’็†่งฃใงใใพใ™ ใ€‚ ใ—ใ‹ใ—ใ€
18:44
normally how loud sound is. Specifically when you're using
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้Ÿณ้‡ใฏ้€šๅธธใ€้Ÿณใฎๅคงใใ•ใ‚’ๆŒ‡ใ—ใพใ™ใ€‚ ็‰นใซๆฉŸๅ™จใ‚’ไฝฟ็”จใ—ใฆใ„ใ‚‹ๅ ดๅˆ
18:50
equipment. When you're using a radio or a TV or when you're
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ใ€‚ ใƒฉใ‚ธใ‚ชใ‚„ใƒ†ใƒฌใƒ“ใ‚’ไฝฟ็”จใ—ใฆใ„ใ‚‹ ๅ ดๅˆใ€ใพใŸใฏ
18:53
listening to music with your your phone and your AirPods we
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ๆบๅธฏ้›ป่ฉฑใจ AirPods ใง้Ÿณๆฅฝ
18:59
would have volume. You can turn the volume up. You can turn the
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ใ‚’่ดใ„ใฆใ„ใ‚‹ๅ ดๅˆใฏใ€ใƒœใƒชใƒฅใƒผใƒ ใŒใ‚ใ‚Šใพใ™ใ€‚ ้Ÿณ้‡ใ‚’ไธŠใ’ใ‚‹ใ“ใจใŒใงใใพใ™ใ€‚ ้Ÿณ้‡ใ‚’ไธ‹ใ’ใ‚‹ใ“ใจใŒใงใใพใ™
19:04
volume down. So when I'm watching TV sometimes I turn it
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ใ€‚ ใ ใ‹ใ‚‰ใ€ ใƒ†ใƒฌใƒ“ใ‚’่ฆ‹ใฆใ„ใ‚‹ใจใใฏๆ™‚ใ€…้Ÿณ้‡ใ‚’
19:08
up. If I can't hear it. If it's too quiet I'll turn it up. And
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ไธŠใ’ใพใ™ใ€‚ ่žใ“ใˆใชใ„ใจใ€‚ ้™ใ‹ใ™ใŽใ‚‹ใชใ‚‰ไธŠใ’ใพใ™ใ€‚ ใใ—ใฆ
19:12
if it's too loud I will turn it down. So once again the plus
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ใ€ใ†ใ‚‹ใ•ใ™ใŽใ‚‹ๅ ดๅˆใฏใ€้Ÿณ้‡ใ‚’ ไธ‹ใ’ใพใ™ใ€‚ ใ‚‚ใ†ไธ€ๅบฆ
19:16
sign on the remote control. Turn it up. Make it louder. Um
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ใ€ใƒชใƒขใ‚ณใƒณใฎใƒ—ใƒฉใ‚น่จ˜ๅทใ€‚ ใใ‚Œใ‚’ไธŠใ’ใพใ™ใ€‚ ใ‚‚ใฃใจๅคงใใใ—ใฆใ€‚ ใˆใˆใจ
19:20
turn it down. Make it quieter. So sometimes when I am watching
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ใ€ใใ‚Œใ‚’ไธ‹ใ’ใพใ™ใ€‚ ้™ใ‹ใซใ—ใฆใใ ใ•ใ„ใ€‚ ใใฎ
19:24
something I have to turn it up. And Jen sometimes says it's too
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ใŸใ‚ใ€ไฝ•ใ‹ใ‚’่ฆ‹ใฆใ„ใ‚‹ใจใใฏใ€้Ÿณ้‡ใ‚’ไธŠใ’ใชใ‘ใ‚Œใฐใชใ‚‰ใชใ„ใ“ใจใŒใ‚ใ‚Šใพใ™ใ€‚ ใใ—ใฆใ€ใ‚ธใ‚งใƒณใฏๆ™‚ใ€…ใ†ใ‚‹ใ•ใ™ใŽใ‚‹ใจ่จ€ใ„
19:29
loud. Um by the way this is from I think the movie Spinal
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ใพใ™ใ€‚ ใจใ“ใ‚ใงใ€ใ“ใ‚Œใฏ ๆ˜ ็”ปใ‚นใƒ‘ใ‚คใƒŠใƒซใ‚ฟใƒƒใƒ—ใ‹ใ‚‰ใ ใจๆ€ใ„ใพใ™
19:34
Tap. He has an amplify for his guitar. And he thinks it's
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ใ€‚ ๅฝผใฏใ‚ฎใ‚ฟใƒผ็”จใฎใ‚ขใƒณใƒ—ใ‚’ๆŒใฃใฆใ„ ใพใ™ใ€‚ ใใ—ใฆ
19:38
louder because the knob instead of going to ten goes to eleven.
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ใ€ใƒŽใƒ– ใŒ 10 ใซใชใ‚‹ไปฃใ‚ใ‚Šใซ 11 ใซใชใ‚‹ใฎใงใ€้Ÿณ้‡ใŒๅคงใใ„ใจๅฝผใฏ่€ƒใˆใฆใ„ใพใ™ใ€‚
19:42
It goes one more. Muffled. Sometimes sound can be muffled.
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ใใ‚Œใฏใ‚‚ใ†ไธ€ใค่กŒใใพใ™ใ€‚ ใ“ใ‚‚ใฃใŸใ€‚ ้ŸณใŒใ“ใ‚‚ใ‚‹ๅ ดๅˆใ‚‚ใ‚ใ‚Šใพใ™ใ€‚
19:49
Recently we all wore masks a lot. Uh right now we wear masks
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ๆœ€่ฟ‘ใ€็งใŸใกใฏ็š†ใ€ใƒžใ‚นใ‚ฏใ‚’้ ป็นใซ็€็”จใ—ใฆ ใ„ใพใ™ใ€‚ ใˆใˆใจ
19:54
sometimes in Canada. But last year I had to teach wearing a
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ใ€ใ‚ซใƒŠใƒ€ใงใฏๆ™‚ใ€…ใƒžใ‚นใ‚ฏใ‚’็€็”จใ—ใพใ™ใ€‚ ใ—ใ‹ใ—ใ€ ๆ˜จๅนดใฏCOVIDใฎใŸใ‚ใซใƒžใ‚นใ‚ฏใ‚’็€็”จใ—ใฆๆ•™ใˆใชใ‘ใ‚Œใฐใชใ‚Š
20:00
mask because of COVID. And so my voice was muffled. Um I
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ใพใ›ใ‚“ใงใ—ใŸ. ใใ‚Œใง ็งใฎๅฃฐใฏใ“ใ‚‚ใฃใฆใ„ใพใ—ใŸใ€‚ ใ†ใƒผใ‚“
20:04
don't have a mask here. Oh, I do have a mask here. What I
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ใ€ใ“ใ“ใซใฏใƒžใ‚นใ‚ฏใŒใ‚ใ‚Šใพใ›ใ‚“ใ€‚ ใ‚ใ‚ใ€ ใ“ใ“ใซใƒžใ‚นใ‚ฏใŒใ‚ใ‚Šใพใ™ใ€‚ ็งใŒ
20:09
noticed is when I wore a mask I noticed that my voice sounded a
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ๆฐ—ใฅใ„ใŸใฎใฏใ€ใƒžใ‚นใ‚ฏใ‚’็€็”จใ—ใŸใจใ ใ€่‡ชๅˆ†ใฎๅฃฐใŒๅฐ‘ใ—้•ใ†ใ‚ˆใ†ใซ่žใ“ใˆใ‚‹ใ“ใจใซๆฐ—ใฅใใพใ—ใŸ
20:14
little bit different. It was muffled. When your voice is
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. ใใใ‚‚ใฃใŸใ€‚ ๅฃฐใŒ
20:18
muffled it's it's harder to understand what someone's
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ใ“ใ‚‚ใฃใฆ ใ„ใ‚‹ใจใ€็›ธๆ‰‹ใฎ่จ€ใฃใฆใ„ใ‚‹ใ“ใจใŒใ‚ใ‹ใ‚Šใซใใใชใ‚Š
20:23
saying. Here I'll give you a better example. If I talk like
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ใพใ™ใ€‚ ใ“ใ“ใงใ€ ใ‚ˆใ‚Š่‰ฏใ„ไพ‹ใ‚’็คบใ—ใพใ™ใ€‚ ็งใŒใ“ใฎใ‚ˆใ†ใซ่ฉฑใ™ใจ
20:26
this my voice is kind of muffled. So you can hear the
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ใ€็งใฎๅฃฐใฏใกใ‚‡ใฃใจ ใใใ‚‚ใฃใฆใ—ใพใ„ใพใ™ใ€‚ ใใฎใŸใ‚ใ€
20:29
sound doesn't come out clearly. I didn't like I liked wearing a
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้ŸณใŒใฏใฃใใ‚Šใจๅ‡บใฆใ„ใชใ„ใ“ใจใŒใ‚ใ‹ใ‚Šใพใ™ใ€‚ ใƒžใ‚นใ‚ฏใฏ ็งใ‚’ๅฎˆใฃใฆใใ‚Œใ‚‹ใฎใงใ€ใƒžใ‚นใ‚ฏใ‚’ใ™ใ‚‹ใฎใŒๅฅฝใใงใฏใ‚ใ‚Šใพใ›ใ‚“ใงใ—
20:36
mask because it protected me. But I didn't like wearing a
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ใŸใ€‚ ใ—ใ‹ใ—
20:40
mask because it was hard sometimes for my students to
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ใ€็”Ÿๅพ’ใŸใกใŒ็งใ‚’็†่งฃใ™ใ‚‹ใฎใŒ้›ฃใ—ใ„ๅ ดๅˆใŒใ‚ใ‚Šใ€ๅคงใใช
20:44
understand me and I had to talk louder and I would keep getting
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ๅฃฐใง่ฉฑใ•ใชใ‘ใ‚Œใฐ ใชใ‚‰ใš
20:48
a sore throat. But yes when your voice is muffled it sounds
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ใ€ๅ–‰ใŒ็—›ใใชใ‚Š็ถšใ‘ใŸใŸใ‚ใ€ใƒžใ‚นใ‚ฏใ‚’็€็”จใ™ใ‚‹ใฎใฏๅฅฝใใงใฏใ‚ใ‚Šใพใ›ใ‚“ใงใ—ใŸ. ใ—ใ‹ใ—ใ€ใฏใ„ใ€ ใ‚ใชใŸใฎๅฃฐใŒใใใ‚‚ใ‚‹ใจ
20:52
like this. It's just hard to hear exactly what the person is
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ใ€ใ“ใฎใ‚ˆใ†ใซ่žใ“ใˆใพใ™ใ€‚ ็›ธๆ‰‹ใฎ่จ€ใฃใฆใ„ใ‚‹ใ“ใจใ‚’ๆญฃ็ขบใซ่žใๅ–ใ‚‹ใฎใฏ้›ฃใ—ใ„
20:57
saying. So we talked about this earlier when someone has
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ใ€‚ ใงใ™ใ‹ใ‚‰ ใ€่ชฐใ‹ใŒ
21:04
troubled hearing. We say that they are experiencing hearing
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่ด่ฆšใซๅ•้กŒใ‚’ๆŠฑใˆใฆใ„ใ‚‹ใจใใซใ€ใ“ใ‚Œใซใคใ„ใฆๅ‰ใซ่ฉฑใ—ใพใ—ใŸ. ๅฝผใ‚‰ใฏ้›ฃ่ดใ‚’็ตŒ้จ“ใ—ใฆใ„ใ‚‹ใจ็งใŸใกใฏ่จ€ใ„
21:07
loss. Or that they have hearing loss. As people get oh they
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ใพใ™ใ€‚ ใพใŸใฏ้›ฃ่ดใŒใ‚ใ‚‹ ใ“ใจใ€‚ ไบบ
21:12
sometimes have hearing loss. They can't hear things as well
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ใฏ่€ณใŒ่žใ“ใˆใชใใชใ‚‹ใจใ€้›ฃ่ดใซใชใ‚‹ใ“ใจใŒใ‚ใ‚Šใพใ™ใ€‚ ๅฝผใ‚‰ใฏไปฅๅ‰ใฎใ‚ˆใ†ใซ็‰ฉไบ‹ใ‚’่žใใ“ใจใŒใงใใพใ›ใ‚“
21:16
as they used to. When you're young and your ears work really
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ใ€‚ ่‹ฅใใฆ่€ณใŒ
21:20
well you could hear a lot of things. But as you get older
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ใ‚ˆใๆฉŸ่ƒฝใ—ใฆใ„ใ‚Œใฐใ€ใŸใใ•ใ‚“ใฎใ“ใจใ‚’่žใใ“ใจใŒใงใใพใ™ ใ€‚ ใ—ใ‹ใ—ใ€ๅนด้ฝขใ‚’้‡ใญใ‚‹ใซใคใ‚Œใฆ
21:24
and sometimes for other reasons you start to experience hearing
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ใ€ไป–ใฎ็†็”ฑใง ้›ฃ่ดใ‚’็ตŒ้จ“ใ—ๅง‹ใ‚ใ‚‹ใ“ใจใŒใ‚ใ‚Š
21:28
loss. You start to have trouble hearing things properly. And
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ใพใ™ใ€‚ ็‰ฉไบ‹ใŒๆญฃใ—ใ่žใ“ใˆใชใใชใ‚Šใพใ™ใ€‚ ใพใŸ
21:33
sometimes you need to wear a hearing aid. A hearing aid is a
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ใ€่ฃœ่ดๅ™จใ‚’่ฃ…็€ใ™ใ‚‹ๅฟ…่ฆใŒใ‚ใ‚‹ๅ ดๅˆใ‚‚ใ‚ใ‚Šใพใ™ ใ€‚ ่ฃœ่ดๅ™จ
21:37
device that people wear in their ear to amplify the sound
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ใฏใ€ไบบใ€… ใŒ่€ณใซ่ฃ…็€ใ—ใฆ้Ÿณใ‚’ๅข—ๅน…ใ—ใ€ๅคšๅฐ‘ใฎ้›ฃ่ด
21:44
and that helps them hear even though they have some hearing
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ใŒใ‚ใฃใฆใ‚‚่žใ“ใˆใ‚‹ใ‚ˆใ†ใซใ™ใ‚‹ใƒ‡ใƒใ‚คใ‚นใงใ™
21:48
loss. By the way this is an older style hearing aid. I
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ใ€‚ ใกใชใฟใซใ“ใ‚Œใฏ ๆ—งๅผใฎ่ฃœ่ดๅ™จใงใ™ใ€‚ ใ‚ˆใ
21:52
chose this picture so that you could see it really well. But
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ใ‚ใ‹ใ‚‹ใ‚ˆใ†ใซใ“ใฎๅ†™็œŸใ‚’้ธใณใพใ—ใŸ ใ€‚ ใ—ใ‹ใ—ใ€
21:56
newer hearing aids are actually a lot more discrete. They're
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ๆœ€่ฟ‘ใฎ่ฃœ่ดๅ™จใฏใ€ๅฎŸ้š› ใซใฏใ‚‚ใฃใจ้›ขๆ•ฃ็š„ใงใ™ใ€‚ ๅฝผใ‚‰ใฏ
22:01
harder to see. My friend has a hearing aid and it's very small
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่ฆ‹ใ‚‹ใฎใŒ้›ฃใ—ใ„ใงใ™ใ€‚ ็งใฎๅ‹ไบบใฏ่ฃœ่ดๅ™จใ‚’ๆŒใฃใฆใ„ใพใ™ใŒใ€่€ณ ใฎๅพŒใ‚ใฏ้žๅธธใซๅฐใ•ใ
22:06
behind his ear and there's just a small little wire that goes
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ใ€ๅฐใ•ใชๅฐใ•ใชใƒฏใ‚คใƒคใƒผใŒ
22:09
in. So you can hardly tell that he wearing a hearing aid. And
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ๅ…ฅใฃใฆใ„ใ‚‹ใ ใ‘ใงใ™ใ€‚
22:15
then of course we talked about when you completely lose the
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ใใ—ใฆใ‚‚ใกใ‚ใ‚“ ใ€ๅฎŒๅ…จ
22:19
ability to hear you are considered deaf. Deaf is the
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ใซ่žใ่ƒฝๅŠ›ใ‚’ๅคฑใฃใŸๅ ดๅˆใ€่€ณใŒ่žใ“ใˆใชใ„ใจ ่ฆ‹ใชใ•ใ‚Œใ‚‹ใ“ใจใซใคใ„ใฆใ‚‚่ฉฑใ—ใพใ—ใŸใ€‚ Deaf ใฏใ€่€ณใŒ่žใ“ใˆใชใ„ไบบ
22:23
term we use to talk about someone who can't hear. Um so I
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ใซใคใ„ใฆ่ฉฑใ™ใจใใซไฝฟ็”จใ™ใ‚‹็”จ่ชž ใงใ™ใ€‚ ใˆใˆใจใ€ๆญฃใ—ใ„็”จ่ชžใ‚’ไฝฟ็”จใ—ใŸใ‹ใฃ
22:27
did some research on this because I wanted to use the
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ใŸใฎใงใ€ใ“ใ‚Œใซใคใ„ใฆใ„ใใคใ‹่ชฟๆŸปใ—ใพใ— ใŸ
22:30
correct terms. There are ways to refer to people who have
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ใ€‚ ้ฉๅˆ‡ใงใฏใชใ„
22:35
trouble doing certain things that are not appropriate. But
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็‰นๅฎšใฎใ“ใจใ‚’่กŒใ†ใฎใซ่‹ฆๅŠดใ—ใฆใ„ใ‚‹ไบบใ€…ใซ่จ€ๅŠใ™ใ‚‹ๆ–นๆณ• ใŒใ‚ใ‚Šใพใ™. ใ—ใ‹ใ—
22:38
my understanding is that describing someone as having
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ใ€็งใฎ็†่งฃใงใฏใ€ ่ชฐใ‹ใ‚’
22:42
hearing loss is the acceptable way and that you can describe
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้›ฃ่ดใงใ‚ใ‚‹ใจ่ชฌๆ˜Žใ™ใ‚‹ใ“ใจใฏๅฎน่ช ใงใใ‚‹ๆ–นๆณ•ใงใ‚ใ‚Šใ€่žใ“ใˆใชใ„
22:46
someone as being deaf if they cannot hear. So when you are
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ๅ ดๅˆใฏ่ด่ฆš้šœๅฎณ่€…ใงใ‚ใ‚‹ใจ่ชฌๆ˜Žใ™ใ‚‹ใ“ใจ ใŒใงใใพใ™. ใ—ใŸใŒใฃใฆใ€
22:50
deaf you are unable to hear. Or you at least have significant
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่€ณใŒ่žใ“ใˆใชใ„ใจใใฏใ€่žใใ“ใจใŒใงใใพใ›ใ‚“ใ€‚ ใพใŸใฏใ€ๅฐ‘ใชใใจใ‚‚้‡ๅบฆใฎ
22:56
hearing loss as well. And then there's something called
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้›ฃ่ดใ‚‚ใ‚ใ‚Šใพใ™ใ€‚ ใใ—ใฆใ€่ถ…้Ÿณๆณข ใจๅ‘ผใฐใ‚Œใ‚‹ใ‚‚ใฎใŒใ‚ใ‚Š
23:00
ultrasound. This is a cool one because there are sounds that
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ใพใ™ใ€‚
23:05
are so high pitched we can't hear them. But dogs can hear
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็งใŸใกใซใฏ่žใ“ใˆใชใ„ใปใฉใฎ้ซ˜้ŸณใŒใ‚ใ‚‹ใฎใงใ€ใ“ใ‚Œใฏใ‚ฏใƒผใƒซใชใ‚‚ใฎ ใงใ™ใ€‚ ใ—ใ‹ใ—ใ€็Šฌใฏ่žใใ“ใจใŒใงใใพใ™
23:12
but we can also use them to do things like we can see a baby
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ใŒใ€ๅฟƒ่‡“ใซๅ•้กŒใŒใ‚ใ‚‹ใจใใซ่ถ…้Ÿณๆณขใ‚’ไฝฟ็”จใ—ใฆๆฏ่ฆชใฎๅญๅฎฎๅ†… ใฎ่ตคใกใ‚ƒใ‚“ใ‚’่ฆ‹ใ‚‹ใ“ใจใŒใงใใ‚‹ใ‚ˆใ†ใซใ€็Šฌ
23:17
inside of a mother's womb using ultrasound when I was having
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23:22
heart problems they would use ultrasound to look at my heart.
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ใ‚’ไฝฟ็”จ ใ—ใฆๅฟƒ่‡“ใ‚’่ฆ‹ใ‚‹ใŸใ‚ใซ่ถ…้Ÿณๆณขใ‚’ไฝฟ็”จใ™ใ‚‹ใ“ใจใ‚‚ใงใใพใ™ใ€‚
23:27
They would send really high pitch sound waves in and I'm
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ใใ‚Œใ‚‰ใฏ้žๅธธใซ้ซ˜ใ„ ใƒ”ใƒƒใƒใฎ้Ÿณๆณขใ‚’้€ใ‚Š่พผใฟ
23:31
sure they reflect or bounce off or something magical happens
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ใ€ๅๅฐ„ใพใŸใฏ่ทณใญ่ฟ”ใ‚Šใ€ ใพใŸใฏไฝ•ใ‹้ญ”ๆณ•ใฎใ‚ˆใ†ใชใ“ใจใŒ่ตทใ“ใ‚Š
23:35
and they can create an image from the sound waves. So
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ใ€้Ÿณๆณขใ‹ใ‚‰ใ‚คใƒกใƒผใ‚ธใ‚’ไฝœๆˆใงใใ‚‹ใจ็ขบไฟกใ—ใฆใ„ใพใ™ ใ€‚
23:39
ultrasound is a very cool way to to C. Isn't that
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่ถ…้Ÿณๆณขใฏ C ใธใฎ้žๅธธใซใ‚ฏใƒผใƒซใชๆ–นๆณ•ใงใ™ใ€‚ ใใ‚Œใฏ่ˆˆๅ‘ณๆทฑใ„ใ“ใจใงใฏใ‚ใ‚Šใพใ›ใ‚“
23:45
interesting? We use sound to C.
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ใ‹? Cใซใ‚ตใ‚ฆใƒณใƒ‰ใ‚’ไฝฟ็”จใ—ใพใ™ใ€‚
ใ“ใฎใ‚ฆใ‚งใƒ–ใ‚ตใ‚คใƒˆใซใคใ„ใฆ

ใ“ใฎใ‚ตใ‚คใƒˆใงใฏ่‹ฑ่ชžๅญฆ็ฟ’ใซๅฝน็ซ‹ใคYouTubeๅ‹•็”ปใ‚’็ดนไป‹ใ—ใพใ™ใ€‚ไธ–็•Œไธญใฎไธ€ๆต่ฌ›ๅธซใซใ‚ˆใ‚‹่‹ฑ่ชžใƒฌใƒƒใ‚นใƒณใ‚’่ฆ‹ใ‚‹ใ“ใจใŒใงใใพใ™ใ€‚ๅ„ใƒ“ใƒ‡ใ‚ชใฎใƒšใƒผใ‚ธใซ่กจ็คบใ•ใ‚Œใ‚‹่‹ฑ่ชžๅญ—ๅน•ใ‚’ใƒ€ใƒ–ใƒซใ‚ฏใƒชใƒƒใ‚ฏใ™ใ‚‹ใจใ€ใใ“ใ‹ใ‚‰ใƒ“ใƒ‡ใ‚ชใ‚’ๅ†็”Ÿใ™ใ‚‹ใ“ใจใŒใงใใพใ™ใ€‚ๅญ—ๅน•ใฏใƒ“ใƒ‡ใ‚ชใฎๅ†็”ŸใจๅŒๆœŸใ—ใฆใ‚นใ‚ฏใƒญใƒผใƒซใ—ใพใ™ใ€‚ใ”ๆ„่ฆ‹ใƒปใ”่ฆๆœ›ใŒใ”ใ–ใ„ใพใ—ใŸใ‚‰ใ€ใ“ใกใ‚‰ใฎใŠๅ•ใ„ๅˆใ‚ใ›ใƒ•ใ‚ฉใƒผใƒ ใ‚ˆใ‚Šใ”้€ฃ็ตกใใ ใ•ใ„ใ€‚

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