Noise Cancellation As Fast As Possible

Noise-cancelling headphones go beyond just blocking sound with physical barriers. What makes them special, and how should you go about choosing a pair?
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[@Matticitt]

0:45 you can see KZbin's compression in full effect. The "white noise" background is uncompressable so the quality of everything else drops - in that case it's Linus - so that the footage looks like 240p even though it's supposed to be 4K!

[@mrsadcatto]

Damn, dude u r talking about 4k in 2016

[@Matticitt]

@@mrsadcatto what's your point

[@mrsadcatto]

@@Matticitt still now, even though 4k gaming, video playback is still rare

[@re.liable]

Do you mind telling why the background is uncompressible? 😁

[@Matticitt]

@@re.liable it's random noise which cannot be optimised any further

[@xNELVKALEN]

Downloadable ram as fast as possible

[@CreasingMass3]

+Kalen Mcbride lol

[@JamieS1992]

+Kalen Mcbride if only you could download RAM Wait the Xbox One can kind of do that it can borrow RAM from the Cloud :o does that count?

[@hypochondriac3194]

+Kalen Mcbride I just downloaded a TB of ram. Half-Life 3 is running so much faster now.

[@TomHarrisP]

"all the rights, all the ram" - DownloadMoreRam 2017

[@sngo8348]

Virus has been detected!

[@DrSQUIRRELBOY12]

Installs those speakers in car => Cant hear that car that is honking at you to go because the fucking light is Green!

[@davidflores909]

+DrSQUIRRELBOY12 Or even worse, you are blocking the way of an ambulance or inadvertently running over a red light on a crossing railroad when the train is coming from an angle you can't see it approaching.

[@z3nkoded178]

+DrSQUIRRELBOY12 Or to hear anything important on the road like an ambulance siren.

[@Asijantuntia]

+DrSQUIRRELBOY12 Noise cancellation doesn't really work like that. It only works on relatively static noise but it isn't effective against sudden or loud noises.

[@PhaseSkater]

Then maybe you should go when the light is green....

[@MarkShaneHansen]

+DrSQUIRRELBOY12 Could just be programmed to not kill siren sounds.

[@ruben-ernst]

wow the picture at 2:04 is kinda disturbing

[@laurabrown6002]

One of the Best Ideas of SoundProofing is "SoundProof Curtains" it actually Block outside Noise coming from Windows. Check Here: livesoundproof.com/best-soundproof-curtains/

[@MrMouse151]

Not exactly correct, they have to be in anti-phase to completely cancel out the wave, not just out of phase but good video :)

[@BillyShears]

+Alex S His semantics are completely correct. He says, "...if the peaks line up exactly with the troughs of the other then we say they are out of phase and the waves can cancel each other out completely." He describes the situation of peaks and troughs lining up which is indeed an out-of-phase position, with respect to one another, and in this situation they cancel each other out. The quick way to describe this would have been to say they are anti-phase but not everyone is going to know what that means. Even I didn't and I am one quarter away from a B.S. in Physics, but I am not sure why you have to call him out on semantics when you obviously know what he meant.

[@puffnpluky76]

+Alex S Neeeeeeeeeeeeeerd!

[@johmanabat3746]

He did say out of phase AND that the peaks and troughs of the anti-noise are aligned to the troughs and peaks of the noise, which is one way of describing anti-phase.

[@oldfartramos]

+Tristan3214 Because this is the interwebz. everyone on the interwebz is more than a man but less than a god, drives a different super car every 2.7 miles they drive, dates a different super model every 15 minutes, makes 1.79 trillion dollars a month, lives in a 147,124,514 square foot mansion that borders both the Atlantic and Pacific Oceans, all while teaching 119 different subjects at Harvard....all before we were 13.

[@zantoxu6807]

+Tristan3214 People that are teaching should teach the correct things. Semantics or not.

[@AnX555]

3:26 "Although many headphones with active noise control do offer solid sound quality" Shows beats -_-

[@tundeadesanya8935]

commUNITY come at me

[@akmedia8206]

DM it’s a stock image

[@theambergryphon4266]

it's sarcastic

[@laurabrown6002]

One of the Best Ideas of SoundProofing is "SoundProof Curtains" it actually Block outside Noise coming from Windows. Check Here: livesoundproof.com/best-soundproof-curtains/

[@janismazversitis]

Is it me or does linus have yellow palms and other parts?

[@dustinrichards785]

+Jānis Mazvērsītis I think it's because of strange color correction. TechQuickie videos are all over the place with color correction.

[@KenJiangzoEngineer]

It might be the reflection of his chroma key screen (green screen, blue screen, etc)

[@Uejji]

Sound waves move in compression waves (forward-backward), not transverse waves (up-down) like light or water waves. Other than that the properties are similar enough for the analogy to work.

[@hkoizumi3134]

Speaking of this, Bose Quiet comfort is the best headphones I ever owned. I have been an avid "gaming" headphone shopper and none of them ever lasted as long as my Bose. I had this Bose for over 3 years now and it's still working and still comfortable to wear. The only downside to this is MIC feature on desktop does not work unless you have a splitter or attach a removable boom MIC like modmic. Otherwise, it was definitely worth $300. From now on, this is the only headphone I'll ever get.

[@twyxelmyumi]

at 0:50 of the video there is a high (Somthing) photo in the background and it is preventing all my devices including my phone to render the video. Linus! Take a note and use less high (Something uhh... White noise picture). Not all devices have a great graphics card to render that great of a picture. Oh and like i said i tested it on all my devices which is a total of 5 including my Chromecast for my tv. my internet is also fine since i get a good 70-80Mbps download and standard 10Mbps upload, there is very little traffic going on right now.

[@fullypowered123]

not sure if you are trolling or not

[@codnuked2506]

no way dude, he's definitely not trolling, the same thing is happening to me, i just cant load any further than 0:47 .

[@YEASTY_COMMIE]

the videos are compressed so that you don't have to update every pixels but only the pixels that changed compared to the last frame. white noise updates a lot of pixels at the same time

[@deimosphob]

Just set your resolution to 1080 and above, at anything below 1080 it will pause. I believe its due to the compression algorithm, its youtube's fault.

[@twyxelmyumi]

alrighty that solves the issue! thanks!

[@PetarStamenkovic]

Why isn't there software that does this? With good enough microphone(s) and speakers you could noise isolate your own room. With our own high end PC/mic/speakers we normally have anyway. All that's missing is software that would allow this. So, wheres this software?

[@keiszer8837]

Petar Stamenkovic Your PC is unable to do this because it is very difficult for your microphone to destroy sounds far away, you will still hear them before the PC is able to ‘cancel’ them out. You are in an open(ish) room with no passive isolation, and since your microphone also probably cannot hear high frequency sounds, (7-16kHz) you will still hear all that. However, since earpads are very good at canceling high frequency sounds, ANC headphones are a very good bet for silence.

[@oniruddhoalam2039]

It is very difficult to do active noise cancelling in a room because noise is coming from everywhere and the noise gets reflected from hard surfaces. The headphone works because the volume of the ear canal is small.

[@davemwangi05]

@@oniruddhoalam2039 nice comment. Tell them that the room is full of zones of constructive and destructive interference, all existing simultaneously. It will never be achieved for a room.

[@supercellex4D]

latency

[@basicnpcc]

Great video but Linus looks a bit yellow at times xD. Please fix this.

[@magnusemilwichmann]

+God Gabe Their colourcorrection is poop, he mentioned in another video :) sorry for bad grammar i have cancer

[@ricodelburrito7852]

Probably converting asain

[@squalltheonly]

He also looks yellow to me on an iPhone, weird.

[@TristanMundell]

+Banterinatoor 420 LOLOLOLOL WUT

[@MenkIsAMubtadiiDeobandi]

He is an alien just watch him and accept him as a human

[@daniyalsiddiquiP1]

linus is one of those youtubers for which I like the video first and then watch it.

[@KennyKenJm]

@5:33 Linus, you need that noise canceling speaker setup...

[@justinwilliams7148]

This would explain some pedestrians that aren't paying attention to that car that whizzes a few feet away from plastering them.

[@StephenKendall]

Worth noting that some cars (such as the 2013 or newer Honda Accord) include active noise cancellation (or more accurately, reduction) directly from the factory.

[@CocoaNutCakery]

Sounds like the Techquickie set could use some active noise cancelling technology of its own.

[@Gameactive]

‘Bout time I heard a train passing by during a TechQuickie video. But on the subject of noise-cancelling headphones, I got a pair, but to my utter dismay it failed to cancel the noise I was looking to tune out-that being loud-ass music and movies being played by people who are too inconsiderate to turn them down. And when the batteries in them died, it took me awhile to figure out how to replace them because they didn’t come with a manual. (Instead, I found a few courtesy cards… so no need to ask me about my Bose QuietComfort 2 acoustic noise cancelling headphones.)

[@perhult1244]

BOSE QuietComfort is lightweight, good sound quality and fairly small. I got the one of them, and i would recommend them

[@Marco-cl9pb]

Nice yellow hands

[@8Lightningbolt8]

Linus you depicted transverse waves as your diagram while sound waves are longitudinal waves, though I can't think of any ways to represent longitudinal waves effectively... So great job.

[@grammarnazionduty9353]

I'm glad to know I wasn't the only one who noticed that.

[@blobcreeper]

They are usually represented like that to make it easier to understand because holy crap trying to work it out using compressions in a wave would get confusing, like seriously, my brain does not need that shit.

[@CrafterSandstone8]

I think it makes it simpler to understand the principle of how noise cancellation works through his explanation with transverse waves. The logic would still transfer over to longitudinal waves (the kind of wave which sound travels in).

[@kennylinda7303]

Thanks for sharing. I think the Military Radio Headset H-251A/U of Power-time is quite effective in noise cancelling as well.

[@Jaymac720]

I have a set of Bose noise cancelling headphones. I used to wear them to bed because my roommate was a snorer. I absolutely love them

[@SreenikethanI]

I always love it when it's Linus everywhere :-)

[@r0se838]

Wow. I had no idea that there were microphones on the outside of them! I thought it just had really sound-proof material as the muffs.

[@Tremulousnut]

LukeThePerson look at Peltors by 3M for examples.

[@ccf_1004]

The way he said noise at the beginning of the episode reminded me of the old DROID commercials

[@GolBDeze]

I would recommend ASUS ROG Vulkan ANC gaming headset. Sounds good, These doesnt weight too much i quess, removable good sounding microphone, big earcups or whatever those are, good active noise cancelling for me i can just barely hear a tv from 3-4 meters away from me and the battery life is about an 2 weeks with 2 full batteries. If youre looking for anc headphones i really recommend these ones. Im using these myself just now :D

[@sawyerbergeron3288]

big visual representation thing: although the description of waves works, representing it as a graphical 2d representation tends to breed inaccurate ideas about how it works: it's really just compression and decompression which could be best represented by something similar to the common Wi-Fi signal strength icon: multiple arcs moving away from the source

[@heinzpeter8264]

Interesting fact: Car companies like Audi (Others probably too, but i don't know about them) already use active noise cancellation. Some engines can shut down some of their cylinders to reduce mileage which leads to a "out of roundness" and therefor unpleasant noises. These then get cancelled out by sending antiphase-waves over the car's sound system. So it is the same principle like in your headphones only that the calculation of the right frequencies and phases gets far more complicated since the interior of a car is a three dimensional space.

[@1992djg]

Now we need a vid on some of the best bang for your buck noise canceling headphones

[@ArroyoAirsoft]

Beats studio3 have 22 hrs of use w/ noise canceling and 40 without

[@fabricionicoletti4006]

Does Linus' got hepatitis? why is he so yellow?? Is he becoming a Simpson??

[@torandreflo]

Yup

[@cublyy]

I think your monitor is dying.

[@BloodSprite-tan]

+Cubly he does look more yellow, although i do need a new monitor he is valid since i know my monitor has a quite cool color temperature and is mostly bluish . it's because of bad lighting most likely. that and it's the trains fault.

[@JackalGYT]

+Cubly Nope, the videos colour correction is shit.

[@AngryBulldogGaming]

I dont get it the video looks just like the others in my phone

[@LovSven2011]

One thing... At 1:20 you said "_out of phase_", but actually to cancel each other two waves must be in _opposite phase_. (Firstly, *superposition* basically means adding of waves.) For two waves if peaks line up with other wave's peaks, they are *in-phase* and you have *constructive* superposition. Any other case is being *out-of-phase*. Special case of these is when peaks line up with other wave's valleys. They are in *opposite* phase or *anti-phase*, so you have *destructive* superposition. They cancel out. _More_ info: Wikipedia: Phase(waves) (section Phase difference) (*DISCLAMER*: Physics is only related to my profession and English not my native language. Some terms could be clumsy literal translations.)

[@AsitorCorporation]

Can I put these devices in public with giant speakers to remove the sound of people talking, in fact just everything? How cool would it be to just make everything completely silent?

[@raywalsh4382]

Bose Quiet comfort 250 are amazing they're the only headphones I use, not usable without the battery, battery lasts around a month

[@ThiagoMaiaSs]

Sadly it still can't silence the voices inside my head.

[@mikem.1452]

Great Video any thoughts on the Golzer BANC-50? They seems to have great reviews on amazon

[@TracyArtus]

+Mike M. (Refill3D) They do have the active noise cancelling, so you could go with either the BANC-50 for $100 or the Bose for $300!

[@christopherboucher2887]

This video was published on my birthday 5 years ago. Ah, those were much simpler times....

[@Snarethedrummer]

Love that Eurovision crack

[@sherifbatawy]

do a special episode on Radio communications.

[@Plusimurfriend]

+Kaka Kaka they usually blow up if they are techy enough.

[@sherifbatawy]

Kaka Kaka oh finally met another Egyptian here ya basha :D I've subscribed to every Tech channel on YT, including TESLA cars, been also featured on Pocketnow weekly recap lol. have a nice day ya zameel :)

[@sherifbatawy]

+Kaka Kaka iDevices, jailbreaking, digital cameras, video editing, aviation, smart cars (Tesla) and medicine as a way of living, pm me if you wanna be friends.

[@captaincumexplosion]

Egyptian Doctor Hi Ana hihi🙂

[@DoubleJMan]

You should get noise cancelling speakers around the new office for that train =P

[@SwatejK]

Can you make a video explaining how Fitness Trackers really work..?

[@sheo5212]

Which is the best earphones or way to stop sound leakage? Or if noise cancelling equals sound leakage

[@DioOmicida]

Something I wondered about but was too lazy to look it up. Thank you, thank you.

[@brianesquinas]

Sony and their Latest Xperia Line up have Noise Cancelling Technology and Noise Cancelling Headphones :)

[@seamusbjh]

When did Linus become a Minon? 😅

[@EspHack]

oh man I'd love to cancel any noise coming to my room, if I got it right it means all I need is a bunch of external microphones surrounding my room and some software that cancels out anything from the outside, that would be a dream...

[@krish2438]

Destructive interference basically.. It detects ambient noise and produces sound waves in anti-phase to it. Are there any significant advantages over passive noise cancelling with silicone buds though?

[@DankGank]

Linus had too much fun coloring with his son's yellow markers.

[@isubmit201]

you made a video noise cancellation now you must do noise isolation

[@dorupero]

Is this a second upload?

[@JamesRJKR]

My guess is that they probably inverse the recorded phase of outside noise, but would there not be a little bit of delay? (haven't watched yet)

[@AngryBulldogGaming]

You should do the lynda.com commercial as fast as possible 😂😂

[@soulsbreaker]

That lad spread at 0:00!

[@64Fedoras]

I hope that was an Office Space reference at 0:11

[@ErnstKotze]

Idea for a techquickie. Please do a video on white noise, pink noise and brown noise?

[@AlexusDelphi]

2:30 I use that exact sound card in my Windows XP rig. Soundblaster Live! from like 1998.

[@TheKevKev12321]

LinusPhysicsTips 1:07 - 1:43

[@MadhanBR]

just realized that I studied this same thing as the superposition principle in physics

[@geneekrd901]

Hey Linus, Can you do a video of what are the materials of all of our monster pc parts made of such as Intel and AMD CPUs, Nvidia GPUs and Mobos and how do they affect our enviorment

[@TheHarrypropper]

go get Sennheiser Momentum m2. Great Sound, multiple input choices (usb, bluetooth and jack) excellent noise guard, very comfortable and you can turn of noise guard while you're hearing through cable. BTW they last about 20 Hours. End of story.

[@Lasseu]

my youtube client (chrome) stops on the 0:49 even at 240p (10Mbit download) but audio goes on.. that white noise is real bandwidth killer, hope they would know bette not to use that kind of images in background -> as it takes a lot bandwidth.. damn, could have zoomed 200-400% the background to get similar effect without fuskin up ppls videostream..

[@1wolfe980]

My video just crashed at that point on chrome with no audio

[@betaneptune]

No mention of the fact that they reduce bass much more than they do other frequencies. In fact, the lower the frequency, the better they work.

[@social3ngin33rin]

I like Bose, but what are some other good companies @techquickie :)

[@atreyabain]

well damn why did everyone miss that office space reference

[@AdamDaubauew]

What effect does noise cancelling have on my ear drums? Can my ears still get damaged from this "antinoise?" I know I would not "hear" any noise but won't there still be some effect on my ears?

[@Spaztron64]

Hey i actually have that soundcard from 2:30 in my PC. Its a Sound blaster live 5.1 SPDIF.

[@TheJPspike]

I'm liking the echoing of his voice, haha. I can tell he is in a big room

[@bibekgautam512]

It's not as dramatically as you make it sound. It just adds up. While resonance would be another thing completely.

[@oa3255]

2:06 .... this will haunt me forever!!

[@512TheWolf512]

linus's obsession with removing the noise of a PC is legendary

[@emmey8865]

Saw a PC using this exact technology not too long ago. (And damn it was loud without the "Anti Noise")

[@LegionOfEclaires]

Very interesting stuff! Thanks Linus!

[@ziohausam]

I am fine with noise reaching to my ears, I just want to prevent noise surrounding me from reaching to the other side of the phone call or online call. Is this the same feature?

[@tycho_m]

Hmmmyeeeaaahh. If you could have that Office Space reference on my desk by tomorrow, that would be great.

[@JohnDemetriou]

That Lynda.com ad went so bad, Lynda sold it LinkedIn

[@zlac]

xperia Z3 and Z5 have in built noise cancelation if you use headphones with 5 contacts (sometimes they are supplied with the phone), you could review those, someone must have one of those phones in the company, right?

[@Midaspl]

So to cancel 100dB noise, you need to create 100dB noise? Is it dangerous for ears (considering that speakers work ony in certain gap of frequencies), or they both cancel completelly?

[@fael097]

chroma key green is reflecting into his skin. either too much light, or the material is too reflexive.

[@Greendude439]

Maybe in your next video you could address this confusing port I see on some of my older graphics cards called S-video.Has it ever been used on anything? is it like the Firewire of video output, where it is only ever used outside of the consumer market for purely professional purposes? What the heck is S-video?

[@ronitpanjwani3655]

Hey Linus, from where do you get the pictures in your videos??

[@judyreyjumamoy]

enter Active Noise Control? or interactive noise control? im not english so i cant differentiate which is which

[@SnazzyKP]

Any recommendation for a good noise canceling headphones under $100?

[@sankai91]

wait.. noise cancellation in cars? Would they also block honking and sirens of police cars, fire trucks and ambulances? hope not

[@MrBiky]

Well, if you want to go the cheap way, buy some comfortable earbuds (those kind of earphones that stick inside the ears) and play something at a reasonable audio level. You won't notice outside noise, since your ears will be sealed by the earbuds' rubber protection. I had some nice, comfortable ones from Sony, but I lost the rubber from one and stopped using them. Now I'm using earphones though, I need to listen to what happens around me, so no noise cancellation for me, thanks.

[@rohanes]

So... does it cancel out the air flow too?

[@missingno3391]

So since the sound waves have high frequency, wouldnt moving the speakers by like a milimeter change it from cancelling out sound to possibly doubling it?

[@ramuk-]

Was it Taran's stapler?

[@gumballwolf4706]

My anc headphones play whitenoise in the background but they also are supposed to cancel other sounds. Are they messed up becuase they are playing whitenoise? They block out all low noises but not high sounds. They are the Sony Xb950n1. I just got them today.

[@ItssAnAliProduction]

Linus, eat my children.

[@bob108488]

Can u make a techquickie on how a credit card machine works?

[@adelm2877]

Thank you

[@dr.suspicious6420]

why aren't transferspeeds stable? like download and copying to a USB

[@laudefrancois6273]

Maybe 3D Rendering or Rendering for next As Fast As Possible?

[@KeithStrang]

How come color/quality has been pretty crappy since the new office?

[@smokareb]

why are the shadows yellow?

[@AnujFalcon]

What ? The transverse wave pictorial representation for sound wave should be replaced by longitudinal wave representation. The sound waves exhibit compression and rarefaction, analogous to crest and trough in transverse wave. Please take a look into this issue. Destructive interference is the name for a wave reducing in amplitude due to another. This another is created by technology listening to the ambience, which requires a good level of engineering.

[@francopellegrin4437]

ARE THERE ACTUAL CAR HEADREST SPEAKERS OUT THERE?

[@MrVinney96]

So why do noise-cancelling headphones need extra batteries? Wouldn't a USB-powered headphone provide power to both the speaker part and the microphone part?