What should electric cars sound like? | Renzo Vitale

70,801 views ・ 2019-01-31

TED


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Translator: Nelson Simfukwe Reviewer: Doris Mangalu
00:13
Let's start with silence.
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Tuanze na ukimya.
00:23
Silence is one of the most precious conditions for humans,
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Ukimya ni hali yenye thamani kwa wanadamu,
00:27
because it allows us to feel the depth of our presence.
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kwa sababu inatufanya kuhisi kina cha uwepo wetu.
00:32
This is one of the reasons why the advent of electric cars
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Hii ni moja ya sababu kwanini ujio wa gari za umeme
00:35
has generated lots of enthusiasm among people.
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umetengeneza hamasa kubwa kwa watu.
00:38
For the first time, we could associate the concept of cars
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Kwa mara ya kwanza, tuliweza husisha muundo wa gari
00:43
with the experience of silence.
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na mazoea ya ukimya.
00:45
Cars can finally be quiet:
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Magari hatimaye yanaweza kuwa kimya:
00:48
peace in the streets,
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amani katika mitaa,
00:50
a silent revolution in the cities.
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mapinduzi ya ukimya katika majiji.
00:56
(Hum)
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(Hum)
01:05
But silence can also be a problem.
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Lakini unaweza pia kuwa tatizo.
01:08
The absence of sound, in fact, when it comes to cars,
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Ukosefu wa sauti, kwa hakika, unapokuja katika gari,
01:12
it can be quite dangerous.
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inaweza kuwa hatari sana.
01:14
Think of blind people,
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Fikiria watu wasiiona,
01:16
who can't see a car which is approaching.
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wasioweza kuona gari linalowasogelea.
01:20
And now, if it's electric, they can't even hear it.
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Na sasa, kama ni la umeme, hawawezi kabisa kulisikia.
01:24
Or think of every one of us as we are walking around the city,
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Au fikiria kuhusu kila mmoja wetu tunapotembea katika jiji,
01:27
we are absorbed in our thoughts, and we detach from the surroundings.
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tumezama katika mawazo yetu, na tumeachana na mazingira.
01:32
In these situations, sound can become our precious companion.
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Katika hali hii, sauti inaweza kuwa mshiriki mwenye thamani.
01:38
Sound is one of the most wonderful gifts of our universe.
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Sauti ni moja ya zawadi murua katika ulimwengu.
01:43
Sound is emotion
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Sauti ni hisia
01:45
and sound is sublime,
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na sauti ni utukufu,
01:48
and when it comes to cars, sound is also information.
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na inapokuja kwenye gari, sauti pia ni taarifa.
01:53
In order to protect pedestrians
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Ili kuweza kuwalinda watembea kwa miguu
01:55
and to give acoustic feedback to the drivers,
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na kutoa mrejesho wa sauti kwa madereva,
01:58
governments around the world have introduced several regulations
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serikali dunia kote wameunda namna baadhi za udhibiti
02:02
which prescribe the presence of a sound for electric vehicles.
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ambazo zinawajibisha uwepo wa sauti katika magari ya umeme.
02:07
In particular, they require minimum sound levels
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Katika uhalisia, zinahitaji sauti kiasi kidogo
02:11
at specific frequency bands
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katika mrudio wa mawimbu mahususi
02:13
up to the speed of 30 kilometers per hour.
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hadi kilomita 30 kwa saa.
02:17
Besides this speed,
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Ukiachana na kasi,
02:19
the natural noise of the car is considered as sufficient.
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sauti halisi ya gari huchukiliwa kama ya kutosha.
02:24
These regulations have generated different reactions
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Sheria hizi zimetengeneza maoni tofauti
02:28
among those who favor sounds and those who fear the presence
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kati ya wale ambao wanahitaji sauti na wale walio na hofu ya uwepo
02:32
of too much noise in the city.
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wa kelele nyingi katika jiji.
02:35
However, I don't see it as the noise of the car.
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Hata hivyo, Sioni kwamba ni kelele ya gari.
02:41
I rather see it as the voice of the car.
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Naona kwamba ni sauti ya gari.
02:46
And this is one of my biggest challenges, and privileges, at the same time.
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Na hii ndiyo changamoto yangu kubwa, na kipaumbele, kwa wakati mmoja.
02:50
I design the voice of electric cars.
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Ninarasimu sauti ya gari za umeme.
02:55
We all know how a combustion engine sounds like,
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Tunaelewa namna gani injini za moto zinavyotoa mlio,
02:59
and we do actually also know how an electric engine sounds like.
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na pia tunaelewa namna gani gari za umeme zinavyotoa mlio.
03:03
Think of the electric tramway.
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Fikiria kuhusu mkokoteni wa umeme.
03:05
As soon as it moves,
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Pale unapotembea,
03:06
it creates this ascending high-frequency pitch sound,
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hutengeneza sauti inayopanda ambayo ni kali,
03:10
which we called "whistling" sound.
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ambayo tunaita sauti ya "filimbi".
03:13
However, if we would just amplify this sound,
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Hata hivyo, kama tutaweza kuongeza sauti hii,
03:17
we would still not be able to fulfill the legal requirements.
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hatutaweza kufikia kanuni zilizowekwa.
03:21
That's also why we need to compose new sound.
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Ndiyo maana tunahitaji kutengeneza sauti mpya.
03:25
So how do we go after it?
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Sasa tunafanyaje?
03:29
In many cities, the traffic is already very chaotic,
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Katika majiji mengi, msongamano wa magari una vurugu sana,
03:32
and we don't need more chaos.
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na hatuhitaji vurugu nyingine.
03:35
But the streets of the 21st century are a great case study
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Lakini mitaa ya karne ya 21 hutupa somo zuri sana
03:40
teeming with transience, cross purposes and disarray.
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zikitiririka kutangatanga, na mvurugiko.
03:45
And this landscape offers a great opportunity
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Na uwanda huu unatoa nafasi nzuri
03:48
for developing new solutions on how to reduce this chaos.
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ya kutengeneza fumbuzi mpya za namna ya kuondoa hizi vurugu.
03:54
I have conceived a new approach that tries to reduce the chaos
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Nimeunda namna mpya ya kujaribu kupunguza huu mvurugano
03:59
by introducing harmony.
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kwa kuleta mlingano.
04:02
Since many people don't know how an electric car could sound like,
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Vile kwamba watu wengi hawafahamu namna ambavyo gari la umeme linatoa sauti,
04:07
I have to define, first of all, a new sound world,
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Natakiwa kufafanua, kwanza ya yote, dunia mpya ya sauti,
04:11
something that doesn't belong to our previous experience
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jambo ambalo halipo katika mazoea ya nyuma
04:15
but creates a reference for the future.
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lakini linatengeneza kumbukumbu ya kesho.
04:19
Together with a small team, we create lots of sonic textures
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Pamoja na timu ndogo, tunatengeneza sauti za kusikika na wanadamu
04:23
that are able to transmit emotion.
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ambazo zinaweza safirisha hisia.
04:28
Just like a painter with colors,
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Kama vile mchoraji na rangi,
04:30
we are able to connect feelings and frequencies
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tunaweza kuunganisha hisia na mrudio wa mawimbi
04:34
so that whenever one is approaching a car,
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ili kwamba pale mtu anaposogelea gari,
04:37
we can feel an emotion
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tunaweza kujisikia hisia
04:39
which, besides fulfilling the legal requirements,
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ambazo, ukiachalia kwamba zinafuata matakwa ya serikali,
04:43
speaks also about the character and the identity of the car.
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pia huongea kuhusu tabia na utambulisho wa gari.
04:49
I call this paradigm "sound genetics."
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Naita namna hii "jenetikia ya sauti."
04:54
With sound genetics, I define, first of all, an aesthetic space of sound,
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Na jenetikia ya sauti, naelezea, kwanza kuliko yote, nafasi ya sauti,
05:00
and at the same time, I search for new, innovative methods
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na wakati huo huo, natafuta njia mpya za ufumbuzi
05:04
for generating soundscapes that we don't know,
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za kutengeneza mazingira ya sauti ambayo hatufahamu,
05:08
soundscapes that allow us to envision abstract worlds,
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mazingira ya sauti yanayoturuhusu kuwaza dunia ya kufikirika,
05:14
to make them tangible and audible.
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kuipa uhalisia na yenye kusikika.
05:18
Sound genetics is based on three steps.
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Jenetikia ya sauti inahusiana na hatua tatu.
05:22
The first one is the definition of a sonic organism,
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Ya kwanza ni kuelezea kiumbe anayesikia,
05:27
the second one is a description of sonic variations,
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cha pili ni kudadafua mabadiliko ya sauti,
05:31
and the third one is the composition of sound genes.
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na ya tatu ni utengenezaji wa jeni za sauti.
05:38
The description of a sonic organism is based on a cluster of properties
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Maelezo ya kiumbe anayesikia yanatokana na muunganiko wa tabia
05:44
that every sound that I compose should have.
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za kila sauti ninayotengeneza inakua nayo.
05:50
[Sound is moving.]
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[Sauti inasafiri]
05:52
I transfer to a small sound entity, such as the sound of a car,
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Nasafirisha katika sauti ndogo, kama vile sauti ya gari,
05:58
the power of the motion of music,
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nguvu ya mrindimo wa muziki,
06:01
so that sound can move so.
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ili sauti inaweza safiri.
06:04
[Sound is acting.]
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[Sauti inatenda.]
06:05
And just like a dancer on a stage,
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Na kama kwa mchezaji katika jukwaa,
06:07
sound will project trajectories of sound in the air.
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sauti itatengeneza njia katika hewa.
06:14
[Sound is memory.]
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[Sauti ni kumbukumbu.]
06:15
And it's not just about the sound of a car.
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Na siyo tu kuhusu sauti ya gari.
06:18
It's the memory of my father coming back home.
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Ni kumbukumbu ya baba yangu akirudi nyumbani.
06:23
[Sound is hypnotizing.]
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[Sauti inavutia.]
06:25
And sound has the power to create an unexpected sense of wonder,
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Na sauti ina nguvu ya kutengeneza maajabu yasiyotegemewa,
06:30
which hypnotizes.
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ambayo huvutia.
06:34
And ultimately,
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Na kwa ujumla,
06:35
[Sound is superhuman.]
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[sauti ni binadamu wa ajabu.]
06:36
sound goes beyond the human condition,
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sauti huenda zaidi ya hali ya kibinadamu,
06:38
because it allows us to transcend.
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kwa sababu inaturuhusu sisi kujongea.
06:44
As a second step, we define the sonic variations.
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Katika hatua ya pili, tunaeleza mabadiliko ya sauti.
06:49
[Identity prism]
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[Prizmu ya utambuzi]
06:50
Just like humans, where different bodies generate different voices,
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Kama vile wanadamu, ambapo miili hutengeneza sauti mbalimbali,
06:54
also different car shapes have a different acoustic behavior
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na pia maumbo mbalimbali ya gari yana tabia mbalimbali za sauti
06:59
which depends on the geometry and the materials.
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ambazo hutegemea maombi na malighafi.
07:03
So we have to know, first of all, how this car propagates the sound outside
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Hivyo tunapaswa kujua, kwanza kabisa, jinsi gari hili husafirisha sauti nje
07:10
by means of acoustic measurements.
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namna ya vipimo vya sauti.
07:13
And just like a single voice is able to produce different tones and timbres,
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Na kama vile sauti moja inaweza kutoa mirindimo ya sauti mbalimbali,
07:19
at the same time, we produce different sonic variations
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na kwa wakati huohuo, tunatengeneza utofauti mbalimbali wa sauti
07:22
within a space of eight words that I defined.
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katika nafasi ya maneno nane ambayo naelezea.
07:28
And some of them are, to me, really important,
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Na baadhi yao, kwangu, ni muhimu sana,
07:30
such as the concept of "visionary,"
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kama vile suala la "maono,"
07:33
of "elegance," of "dynamic," of "embracing."
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ya "utashi," ya "mabadiliko," ya "kufumbata."
07:39
And once we have defined these two aspects,
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Na pale tutapoweza kuelezea hizi namna mbili,
07:42
we have what I call the identity prism,
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tunakuwa tumepata ninaoita mche wa utambuzi,
07:46
which is something like the sonic identity card of a car.
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ambao ni kama kadi ya utambuzi wa sauti ya gari.
07:53
And as a third step, we enter the world of the sound design,
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Na katika hatua ya tatu, tunaingia katika dunia ya utengenezaji wa sauti,
07:59
where the sound genes are composed
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ambapo jeni za sauti zinatengenezwa
08:01
and a new archetype is conceived.
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na muundo mpya unatengenezwa.
08:05
Now let me show you another example
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Sasa ngoja nikuonyeshe mfano mwingine
08:08
of how I transform a sound field into a melody.
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wa namna ya kubadili sauti kuwa mlio
08:13
Think that I am a violin player on stage.
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Fikiria kua mimi ni mpiga fidla jukwaani.
08:16
If I would start to play the violin,
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Kama nitaanza kupiga fidla,
08:18
I would generate a sound field which would propagate in this hall,
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Nitatengeneza sauti ambayo itatembea katika ukumbi huu,
08:22
and at some point, the sound field would hit the side walls
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na kwa wakati huo huo, sauti itagonga kuta
08:26
and would be scattered all over the place.
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na itasambaa hapa kote.
08:29
And this is how it looked like.
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Na ndivyo itavyoonekana.
08:31
Some time ago, I captured several ways of sound to hit side walls.
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Muda fulani uliopita, nilinasa namna baadhi ya sauti inavyogonga kuta.
08:38
And last year, I was asked by the Bavarian Radio Symphony Orchestra
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Na mwaka jana, niliombwa na bendi ya Bavarian Radio Symphony
08:42
to compose ringtones that they were going to play.
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kutengeneza milio ambayo wangeipiga.
08:46
So one of them, I had the idea to start from this sound field.
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Katika mmoja wao, niliwaza kuanza na mrindimo wa sauti.
08:51
I took a section,
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Nilichukua kipande,
08:53
I superimposed the section over the distribution
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Nikakijumuisha katika mgawanyo
08:56
of the musicians onstage,
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wa wanamuziki wakiwa jukwaani,
08:58
and then I followed the blooming of the sound field
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na kisha nikifata mrindimo wa sauti
09:01
by means of three parameters:
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kwa namna ya vipimo vitatu:
09:04
time, intensity and frequency.
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muda, kiasi na mrudio wa mawimbi.
09:06
Then I wrote down all the gradients for each instrument,
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Kisha nikaandika ulalo wa kila kifaa,
09:11
and as you can see, for instance,
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na unaweza kuona, kwa mfano,
09:13
the piece will start with the string section playing very softly,
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vipande vitaanza na kipande cha uzi kikipiga kwa umororo,
09:17
and then it's going to have a crescendo as the brasses, the woods will jump in,
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na kisha kitaanza ongezeka pale shaba, mbao zitapoanza sikika,
09:23
and the melody will end with a harp and a piano
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na mlio utaishia na kinubi na kinanda
09:27
playing on the highest range.
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zikilia katika kiwango cha juu.
09:34
Let's listen how it sounded like.
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Tusikilize inalia vipi.
09:39
(Ethereal music)
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(Mziki wa mbinguni)
09:56
(Music ends)
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(Muziki unaisha)
09:59
So this is the sound of my alarm clock, actually, in the morning.
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Kwa hiyo huu ni mlio wa saa yangu inayoniamsha, kiukweli, asubuhi.
10:03
(Laughter)
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(Kicheko)
10:05
And now let's go back to electric cars.
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Na sasa turudi katika gari za umeme.
10:09
And let's listen to the first example that I showed you.
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Na kisha tusikilize mfano wa kwanza ambao nimewaonyesha.
10:20
(Hum)
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(Hum)
10:28
And now I would like to show you how a potential sound,
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Na sasa nitawaonyesha namna gani mlio muhimu,
10:33
based on the sound genetics for electric cars, could sound like.
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ambao unatokana na jini ya sauti kwa ajili ya gari za umeme, itasikika hivi.
10:39
(Ethereal music)
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(Muziki wa mbinguni)
10:43
(Pitch rises with acceleration)
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(Kiwango kinapanda na kuongezeka mwendo)
10:52
Cars are a metaphor of time, distance and journey,
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Gari ni mifano inayohusiana na muda, umbali na safari,
10:59
of setting out and returning,
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ya kuondoka na kurudi,
11:02
of anticipation and adventure,
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ya shauku na safari,
11:05
but, at the same time, of intelligence and complexity,
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lakini, kwa wakati huo huo, na utashi na utata,
11:10
of human intuition and accomplishment.
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ya uelewa wa binadamu na mafanikio.
11:13
And the sound has to glorify all that.
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Na sauti imetukuza hayo yote.
11:17
I see cars both as living creatures
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Naona magari yote kama viumbe vinavyoishi
11:21
and as highly complex performative art installations.
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na vifaa vilivyotengenezwa na sanaa tata sana.
11:27
The sounds that we envision through sound genetics
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Sauti ambazo tunaziunda kupitia sauti za jenetikia
11:31
allow us not only to celebrate this complexity
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sio tu zinaturuhusu kufurahia utata huu
11:36
but also to make the world a more elegant and safe space.
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bali pia kufanya dunia iwe sehemu maridadi na yenye usalama.
11:42
Thank you.
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Asante.
11:43
(Applause)
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(Makofi)
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