How Noise-Canceling Headphones Create Silence in Microseconds | WSJ Tech Behind
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День томуNoise canceling is a hallmark feature of top headphones across brands, from Apple AirPods Pro and Beats earbuds to Sony and Bose headphones. Behind these popular noise canceling headphones, though, is cutting-edge hardware running sophisticated algorithms. What kind of audio processing is necessary to eliminate background noise when listening to music or watching a movie?
WSJ dives into how noise canceling works, how the technology has changed and where things are headed.
0:00 A sound wave and its inverse
0:32 Destructive interference
1:30 Noise-canceling headphones’ origins
3:17 What background noise to remove
4:46 Transparency modes or aware modes
Tech Behind
'The Tech Behind' explores the amazing engineering, computing, science and algorithms that power our favorite tech.
#NoiseCanceling #Headphones #WSJ
@TonyVainosky 10 місяців тому
This is exactly why i loved shows like How Its Made - getting to see how the things we use and take for granted every single day actually work is just fascinating to me
@vahidh93 8 місяців тому
It was my fav show as a kid as well.
@Djanthonymosley 10 місяців тому
It’s amazing how inexpensive these headphones are considering all that goes into it
@eduwino151 10 місяців тому
economics of scale and cheap mass production technology
@santamariamarvy 10 місяців тому
Slave labor😅
@user-sj1om6mx8b 10 місяців тому
she is beautiful
@lewiskelly14 10 місяців тому
Hahahaha they're not inexpensive
@rafaelrangel161 10 місяців тому
Depends on where you are, here in Brazil I paid 2k (415 dollars) for my Airpods Pro first gen, back in 2020. Curiosity: In Brazil the Iphone 14 1tb costs 3219 dollars (june 2023).
@i-kun_yeetpain 10 місяців тому
Human Intelligence truly knows no bounds. It's amazing, almost surreal that a simple desire, an annoyance, or a simple business thought can spur forth such intriguing technology.
@user-sj1om6mx8b 10 місяців тому
Humans are amazing
@romella_karmey 10 місяців тому
Anything is possible if humans are driven by the urge to earn tons of money
@Sjalabais 9 місяців тому
The Bose guy's frankness and clarity are exceptional, as well as the lady who worked at Dolby who speaks with such clear insight and an almost poetic structure in her arguments. These videos live and breath through a good choice of interview subjects and you nailed it here.
@nicolaswilliams8304 10 місяців тому
I really appreciate y’all creating these “The Tech Behind” videos. Keep it up :)
@kandredfpv 10 місяців тому
Wow, I was really impressed by how well Poppy Crum articulated the importance of noise and the various stages of the cancellation technology.
@justayoutuber1906 9 місяців тому
Now I want a poppy seed crum cake
@ananthakrishnank3208 9 місяців тому
Selectively cancelling out a particular type of noise is just another level. 👏👏
@pepsiman9688 10 місяців тому
I’ve always wanted to know how this technology works and wow, I’m amazed!! Tysm for making this video!
@theinteloutside 10 місяців тому
after using my bose qc35 for the last 5 years,now i understand how this noise cancelling really works❤❤❤❤
@117gamerfreak 10 місяців тому
Such a fascinating video. I can’t wait until the successor to the Bose 700 comes out (hopefully sometime this year - surprised there have been no leaks at all)
@darealphantom 10 місяців тому
I appreciate these videos so much because I’m so curious how things like this are created science is amazing
@mjrsoccer85 9 місяців тому
What a great video! Veo Very informative and insightful, thank you.
@CherylsCreativeWorld33 10 місяців тому
This was really interesting, As someone who wears hearing aids. I find the idea of noise cancellation absolutely amazing, I’m in awe of the technology that we have these days!
@greatedges 9 місяців тому
I so wish hearing aid manufacturers paid more attention to the extreme need for ambient noise reduction! Not that the top brands don't try...but this feature could be so much better and could make life more enjoyable for many people.
@CherylsCreativeWorld33 9 місяців тому
@@greatedges I absolutely agree with you! It would make a world of difference!
@gouravmisra2317 10 місяців тому
Respected sir thank you very much for yours support and blessings
@matthewong7060 10 місяців тому
Looking forward to that selective noise cancelling technology as well as the code that was used to achieve it 😊
@j.a.velarde5901 10 місяців тому
WONDERFUL! - Thank you for your wonderful documentaries, and for sharing them online here on UKposts. You have our support!
@maskinbeauty3734 10 місяців тому
This Tech is amazing. Pure Magic.
@muhammadshamsularfeen9330 8 місяців тому
The posture on this guy 🙌🏽🙌🏽🙌🏽
@_aidid 8 місяців тому
This technology fascinates me after I have learnt about it in my highschool physics class. Beforehand, I used to wonder how do the pilots listen in such noisy environments
@aaronaustrie 10 місяців тому
Impressive tech!!
@r3ttgaming177 10 місяців тому
As a person who makes music I've come the the conclusion that music, noise and sound is magic. I also believe removing these waves is magic.... In summary, sound is magic so appreciate it. Side note, use some type of ear protection. You can only lose the hearing you have, so protect it!
@djdjbeje 10 місяців тому
not magic, science.
@TaoDeChing-ls5gz 9 місяців тому
A lot of kids screaming at my hotel right now, that’s the opposite of magic Sir.
@FosFate 8 місяців тому
"As a person who makes music-" 🤓☝️
@tinyfreckle 8 місяців тому
Thought this comment was gonna go a different direction like "this is magic, in summary these people are witches, ready the pyre." 😂
@r3ttgaming177 8 місяців тому
@@tinyfreckle This also happens to be true, and a fact!
@hummersd 9 місяців тому
Love the behind the scenes look at the technology. The only error made was that you're saying "AirPods Pro" but showing the AirPods 3rd generation. Woh-wah.
@subratkumarsahoo 9 місяців тому
Mind-blowing😮
@GoodKingMort 8 місяців тому
So could they potentially make a noise cancelling speaker? Have two speakers that also play the inverse of the sounds sounds around you 🤔
@rickintexas1584 9 місяців тому
I have owned several pairs of Bose noise canceling headphones for years. I never fly without them. They are amazing.
@user-bn5bx6vd8l 9 місяців тому
Does it completely block the engine noise during flight?
@justayoutuber1906 9 місяців тому
@@user-bn5bx6vd8l Almost. If you sit next to the engine at takeoff, it can overwhelm them and you will hear like static/popping.
@GyanPrakash 10 місяців тому
Love my BOSE HEADPHONES 😊
@ZensGamma 10 місяців тому
Interesting information…nice content
@catatonicbug7522 9 місяців тому
I use my Galaxy Buds+ to mow the lawn. I can listen to music, and it deadens the noise of my mower and other equipment. Would be nice if it could completely block the sound, but the fact that sound travels through my body too means that active cancellation would have to account for the stuff that gets to my eardrums via my soft tissues and bones as well as my ear canal. That seems like it would need to be calibrated to each person, in each unique situation.
@DACatface 9 місяців тому
oh wow i didn't know the welcome come was a setup. i always turn my headphones on before putting them on!
@mattjereza6541 10 місяців тому
Best Bose ad i’ve ever seen 😂
@jesselam5867 10 місяців тому
So THATs that the AirPods pro starting noise is for, and AirPods transparency mode is unbelievable, I still have no idea how two drivers in my ear can recreate direction in a real world. I can pinpoint where I hear sounds from and it pretty much sounds like I don’t have anything on at all.
@privacyhelp 9 місяців тому
LOL because basically they just do nothing but just let everything in
@FlorenzzaCantarechannelID123 8 місяців тому
Terima kasih telah berbagi informasi penting untuk kami 🙏
@Samantha-vlly 10 місяців тому
I’ll wait for that selective noise cancelling wireless earphones. Surely helpful
@justayoutuber1906 9 місяців тому
I'm waiting for one that cancels out the sound of Tonald Dumps voice.
@ronishshrestha7111 10 місяців тому
I've worn boss headphones, I remember having good experience and good comfortably and good sound with good base
@QuietStormX 10 місяців тому
I use Jabra wireless EarBuds and Sony Wireless HeadPhones. EarBuds all the time when out to hear notifications and health anouncements as I walk miles... Also on Subway rides and Bus too with one's really loud like at home..
@Saurabh.Nikhade 10 місяців тому
jabardast
@JawadmansooriJawadumer 8 місяців тому
Amazing
@0xDevelopers 10 місяців тому
Watching this on my XM5, its mind blowing how far algorithms have come through. I can literally meditate while having my headphones on
@donnagathers6979 10 місяців тому
Very educational,
@mart1n287 9 місяців тому
adaptive audio already exists on anker soundcore liberty NC4 which cost a fraction of the ipod pros
@Babyfaraz 10 місяців тому
I still remember the very first time i experienced ANC on my Airpods Pro. OMG, It was jaw dropping.. I was screaming like WUAATTTTT..
@romella_karmey 10 місяців тому
I have the Pro 2 and I rarely used ANC because it feels too clogged in my ears. Like the silence is caving in, it’s suffocating… It’s suitable perhaps on noisy environment but if you work from home and all quiet, I’m more inclined to use the Transparency mode 😅
@abhipatil4844 9 місяців тому
Awesome
@MoritzFischer 10 місяців тому
I am happy to see that even high tech companies have not figured out a solution to make markers work on whiteboards....😂😂😂
@lexogk1393 10 місяців тому
That’s actually genius
@joshs3916 10 місяців тому
Great video
@thatdudeoverthere7286 10 місяців тому
absolutely briliant I have to say
@dfsanche 8 місяців тому
Is there a way they could use this for people suffering from tinnitus?
@dop_96 10 місяців тому
What I can not understand yet about active noise cancellation if also protect the people from louder environments. An example: if I work work near an industrial machine that requires earbuds for preserving my hearing, will the use of noise cancellation only reduce the noise I perceive or also effectively preserving hearloss? I never found articles about this.
@justayoutuber1906 9 місяців тому
They have ANSI approved noise cancellation headphones for gun shooting. Those should be ok. They have to be approved for OSHA work environments.
@privacyhelp 9 місяців тому
they are not, because these small drivers did not have enough power to counter those heavy noise. passive noise cancellation is better for that
@aaronaustrie 10 місяців тому
Cool!
@Igor_Itkin 10 місяців тому
I have a specific question. He said that the brain interpretes the sound as 0 but is the sound still there and the ear drum is still vibrating even though the sound is canceled?
@peterrenzland1514 10 місяців тому
Because of construction noise I've been using Apple's Max since they came out. After a few hours my inner ears hurt. I imagine it's because ANC cancels sound but produces (increased) pressure. Is that so, or am I also imagining the pain? :-)
@kurumitokisaki4844 9 місяців тому
1:24
@takeuchi5760 4 місяці тому
@@kurumitokisaki4844 That's the ideal case. In reality, I don't think ANC does perfect destructive interference, like the lady from Dolby mentioned - if the sound is not constant, the ANC can't do too much to those frequencies.
@HasanAli-kd2vx Місяць тому
Someone please give an advise to choose a headphone for online meetings for background voice cancelling. Which one do you recommend?
@divyamparmar96 10 місяців тому
Give the bro some good whiteboard markers
@zhonzhonzhon 10 місяців тому
Can active noise canceling be used in outdoor speakers to counter traffic noise?
@sei408 10 місяців тому
that’s actually pretty genius
@zhonzhonzhon 8 місяців тому
@@sei408 i hope some people make it so I can sleep at night and concentrate while working.
@auro1986 10 місяців тому
so these are for military use ?
@hihi-by1me 9 місяців тому
for those of you looking to buy an anc headset after watching this video, its best to do your own research and buying what feels best for you. if youre looking for earbuds with only the best anc and nothing else, the best you can get with todays money is the Bose QCII, and the best budget friendly ones are the Soundcore A40s. They are not only objectively the best, but also scientifically, in terms of decibels of sound reduced. However, theres definitely more you should look for in headsets, specifically audio quality, comfort and fit, mic quality, battery life, etc. Those saying the Sony is superior in anc technology are simply wrong. Bose has far more experience and expertise in it. But Sony does make better all rounded earphones :)
@somekindofmonster3613 7 місяців тому
I'm no expert and pardon my ignorance but do they have to predict sounds to cancel them. The headphones technically knows what is playing, cant they just try to eliminate every other frequency that is not inside whats playing? Doesn't this solve the prediction problem? I would love to hear from someone who knows this stuff
@kshitijoberoi1928 9 місяців тому
It still seems odd to me why ANC technology has been forced via earbuds rather than neckbands and earphones where there is plenty of room to experiment and achieve more.
@aylyi-huh9355 10 місяців тому
such amazing technology. baby on plane: hold my milk
@unknownduke 9 місяців тому
I need to see this cancellation in actual water waves before I fully accept the concept
@sanders2378 9 місяців тому
I have spent a fortune on different models but none can bring me silence from noisy neighbours 😢
@anniestumpy9918 9 місяців тому
Same here, the overall performance is always disappointing.
@lucastarg 8 місяців тому
no active noise cancellation is able to cancel out every single outside noise. for that, you need actual earplugs or IEMs (in ear monitors) with really good sealing and correct tips for your ears (fit and sealing are very personal. an IEM that fits and seals perfectly for me might not do the same for you). If you're really serious about this, you might wanna look into custom IEMs: they make a mold of your ears and create an IEM perfect for you (but they can get really expensive).
@sanders2378 8 місяців тому
@@lucastarg thank you, I hadn't heard of IEMs.
@auro1986 10 місяців тому
how? reflecting sound
@geraldarcuri9307 10 місяців тому
I need a set of ear buds that eliminates leaf blowers sounds, which, in Southern California are ubiquitous and continuous. Annoying.
@justayoutuber1906 9 місяців тому
They do struggle with those
@justayoutuber1906 9 місяців тому
I use my Bose over the ear headphones every day. They are awesome on planes.
@carbo73 7 місяців тому
It will work for me when it blocks reaggeton played by as$#oles at top volume.
@lacuevadelvampiro 8 місяців тому
i heard along time ago on AM coast to coast thats how jets are able to be silent…
@sangeshpv7335 10 місяців тому
John Rule make an option to turn off NC in qc45 or atleast give an option to keep Nc to low
@justayoutuber1906 9 місяців тому
Isn't there a button like on the QC25?
@sangeshpv7335 9 місяців тому
@@justayoutuber1906 there is a button only to put it on nc or transparency mode
@sircolt8184 9 місяців тому
Man I wonder how these work with merzbow albums.
@AzVfL 10 місяців тому
Do ANC headphones also actually protect ears from loud noises?
@CannabisTechLife 10 місяців тому
So... You didn't watch the video?
@jomogo4644 10 місяців тому
@CannabisCultureTechLife I think he is talking about decibels and my guess would be no apart for the device blocking some off the sound the ANC will not help you with sound that is to loud.
@JoySingh 10 місяців тому
Yes, it does protect ears from loud noises, but the high-end ones from Bose and Sony are great options for that
@privacyhelp 9 місяців тому
no, because the driver is too small to counter heavy loud noise
@meallion263 3 місяці тому
It's a great technology but at the same time you really need to be aware of your environment. I have a crazy beat studio buds it's crazy at canceling noises but i still got an airpod pro because i need to be aware of my environment It's crazy dangerous these days and you need to be sharp and at alert.
@jackelliot547 10 місяців тому
. . . . .Why do my BOSE headphones do not last long and are broken quickly ?
@noahway13 10 місяців тому
Can it control OUT going sounds, like a jet would reduce it's noise for people on the ground?
@justayoutuber1906 9 місяців тому
There are little wavy things that are on the back of shrouds of Airbus 320 engines that create the same type of interference waves that make the jet noise quieter for those below.
@sdinesh4252 Місяць тому
When emergency sounds like vehicle coming to hit a person who putting voice control device as you said?
@MDjahidHasan-dv3sl 10 місяців тому
❤❤❤❤❤
@sakilafridi9657 5 місяців тому
❤
@willu842 10 місяців тому
Woah
@cargoshorts5666 8 місяців тому
id love to see anybody from Apple talk about this tech, they've quite literally perfected transparency mode compared to everybody else
@nikkivieler3761 10 місяців тому
I have a very big issue with the "I don't wanna hear those things" consumer demands, it shows an atiitutde which is very unscientific...
@Nick-pc9tf 10 місяців тому
How did Apple do it? It's processing it super fast and what determines what gets through? A dataset of sounds to passthrough? AI gate?
@JoySingh 10 місяців тому
watch the video
@Nick-pc9tf 10 місяців тому
@@JoySingh I did. There's more going on that what Bose has presented. I want to learn not assume.
@KaiayaRules 10 місяців тому
Honestly, it feels almost like apple is just embracing the fact that they can't cancel out sudden noises lol
@tonylancer7367 10 місяців тому
Probably the same way as Bose, a mix of a dataset and super optimised algorithm, so the earphones can adjust accordingly. The algorithm probably checks for stuff that fall in the category of "loud noise - drill; cars on highway - people in dense city" etc, and adjusts when there is a sharp change (someone calling your name up close, you speaking/singing).
@justayoutuber1906 9 місяців тому
licensed Bose technology at first...then copied it i presume
@christinakennon 10 місяців тому
v interesting
@dryais 9 місяців тому
There are powerful and tiny DSP in 1986?
@nitsuanew 10 місяців тому
The man needs new dry erase makers
@Re_RAM 10 місяців тому
So what your'e telling me is all anyone had to do to defeat Black Bolt in Marvel's Inhumans was to wear noise cancelling headphones?
@papagen00 9 місяців тому
they are good i use them but foam earplugs are still best.
@justayoutuber1906 9 місяців тому
I've done both. On an airplane the NC ones are nice. plus you can listen to a movie
@kostasmira2933 10 місяців тому
Me one day ago searching on UKposts: What is the future of noise cancelling? Today youtube: How noise cancelling headphones create silence in seconds.
@mikeyoung9810 10 місяців тому
Can you generate an inverted gravity wave and cancel gravity?
@posthocprior 10 місяців тому
Gravity travels at the speed of light. So, it’s instantaneous. That is, sound travels at a measurable rate from the headphone speaker to the ear canal. Any inverse function requires a calculation. Because gravity travels at the speed of light, this likely wouldn’t be possible.
@posthocprior 10 місяців тому
Gravity is a wave. This can be proven in many ways: in the atmosphere or through a moving object. The point: gravity produces ripples that have amplitudes and this is used to calculate its speed.
@jtgd 10 місяців тому
Only if you can manipulate gravity without need of adding mass. Then you have to find the elementary force unit and be able to influence it
@jtgd 10 місяців тому
@@posthocprior plus, gravity waves can and have been observed in an astronomical scale
@jtgd 10 місяців тому
4:53 does it? Has been “noise canceling” For 2 months
@metaforically 10 місяців тому
4:13 I'm sorry how does this visual connect to the video?
@JEEDUHCHRI 10 місяців тому
You’ve never been close to a humming neon sign? It’s like a droning sound, it’s even in the video.
@qingyuanyang3817 10 місяців тому
is that a matlab?
@abdullahsiddiqui89 10 місяців тому
I have never wore Active Noise Cancellation earbuds or headphones. Is it really worth it? You really never hear background noise like in a road or in a noisy market?
@dogukanbalta6021 10 місяців тому
yes, it is crazy. I remember the first time i used one. It was an airpods pro of my friend, which has one of the best anc in the market. I legitimately felt like isolated from my surroundings. It was like your eyes telling you you are in a crowded place yet your ears tell you youre in your room in the middle of the night.
@samo6083 10 місяців тому
@dogukanbalta6021 it doesn't completely shut off sound but when you have music playing to like 50% yes you can't hear anything
@markfisher7962 9 місяців тому
Arthur Clarke imagined this in a 1950's short story.
@7_years_and_ 10 місяців тому
There are hundreds of chinese companies selling same . atleast that is what they claim . noise cancelling . are they any good as bose or sony ?
@Scrappy-Youtube 10 місяців тому
no. ive tried many different cheaper anc products. The beats studio buds are already kind of expensive but the ANC is mediocre on them. They cancel a little bit of noise and its more for achieving some level of comfort in loud environments. Both and Bose and Sony earbuds (Quietcomfort II and WF-1000XM4) are wayyyy better and silence cars passing by two and i can hardly hear them
@7_years_and_ 10 місяців тому
@@Scrappy-UKposts thank you for the information.
@AdrianVersusTheWorld 10 місяців тому
4:54 not AirPod pro. Those are AirPods (Gen 3)
@janklaas6885 10 місяців тому
📍4:15
@johirulhoqakash 10 місяців тому
Waiting with ANC on with my QCY TWS😂
@VlogFati-wt1fg 8 місяців тому
😊
@jtgd 10 місяців тому
Ironically this video can also be 30 seconds long
@jsbrads1 9 місяців тому
My noise canceling head phones make wind noisier! Have to shut that program off when windy.
@pranjalkumar1522 8 місяців тому
Science is amazing
@JamesTudsbury 10 місяців тому
Is this a native ad?
@bluedragontoybash2463 10 місяців тому
Sounds like it. The technology never took off despite years of expensive ad
@symphantic4552 9 місяців тому
That dummy head has the appropriate expression for listening to trippy music while high. Nice
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