Cool explanation 👍. Does reversing the reactive speaker wires work? Without any signal processing apart from amplifying ?
@user-ld5lb2vt3c
2 жыл бұрын
Thanks for your great content. I can figure out some more about ANC technology.
@umiturgutaswwsa
2 жыл бұрын
It was a really helpful video for more detailed understanding of noise cancellation.
@dragilxcom4176
2 жыл бұрын
I need sound cancellation focused by laser delivery (MIT has done research on this), so I can nullify the source of the sound i.e. the speaker source.
@dreadone6894
3 жыл бұрын
How do you do this at sonic boom?
@vikosdoctor484
3 жыл бұрын
This technology is use to make ( noise cancelling) wireless earphones in 2021 😁
@Chrielis
3 жыл бұрын
troll physics
@GabrielTobing
4 жыл бұрын
Here because I want to make one because of my neighbors loud music.
@idontevenwanttomakea
Жыл бұрын
Did you ever do this?
@GabrielTobing
Жыл бұрын
@@idontevenwanttomakea No I never did, just never really did it tbh, been busy with a lot of stuff and just yeah forgot XD
@Marconel100
4 жыл бұрын
Beta alert, tjsek nerd
@Kumpkinmooster
4 жыл бұрын
Kinda like the limbo... lol. I love this guy. Smart!
@chrissmith4444
5 жыл бұрын
I wonder if you have 2 speakers on full volume each with opposite sound waves can you go deaf?
@svasyatin
5 жыл бұрын
Is it possible to cancel your own voice in real time using sound invention effect?
@warlockboyburns
5 жыл бұрын
So is there a simple sound inversion software that will take noise from a microphone and playback the inverse frequency through speakers in real-time??
@saraalzate9464
6 жыл бұрын
Hello, do u have any idea of how to make this but getting the sound (good microphone, if you know any that helps too) of a room and make a headphone with arduino Duo?
@seeingdragons4319
6 жыл бұрын
That was excellent
@jonni2734
6 жыл бұрын
Awesome video and explanation!!
@Willam_J
6 жыл бұрын
If anybody wants to easily recreate this effect at home, just reverse the polarity on one of your stereo speakers. Play some music with a good amount of bass in it. Move your balance control back on forth from center to either side and you will hear the bass get louder and softer.
@Willam_J
6 жыл бұрын
Just some advice.... Leave your camera on a tripod while doing the experiments and demonstrations.. It will make the effect much more noticeable and the results won’t be skewed by the position of the microphone on your camera.
@tropicaljantie
6 жыл бұрын
Can I diy this
@gabrielrodrigueztrucios3311
5 жыл бұрын
Jan Geirnaert don't die.
@Wordsman
6 жыл бұрын
What would it sound like if you inverted, in THIS way, music? What would something like dubstep sould like if we were listening to it's cancellation sound instead of the original song?
@antonarset
7 жыл бұрын
What about voice cancellation? Our office is extremely noisy, a lot of hysteric women...
@nulee2009
7 жыл бұрын
Wow, I didn't know you did all these Hunter, Great demonstration! I recently rented an apartment at San Francisco and the street noise (rumbling sound from cars) can be heard at night, the frequencies are very low and can penetrate the actually-very-nicely-isolated windows, and my gf had hard time sleeping. I googled "noise cancelation speaker" and this video came up on top!!! :D btw, my plan is to connect my microphone (Rode Stereo pro, starting from 20-30-40Hz to 20kHz) to my subwoofer (Klipsch r-112sw, 24Hz-150Hz) with phase set to 180 degree...... I felt it should work with some tweaking and maybe some amplification..... how do you think?:)
@kubaposturzynski7137
5 жыл бұрын
I was thinking about the same. I think you can connect speaker from + to- and -to +. Is your idea working?
@idontevenwanttomakea
Жыл бұрын
Did this end up working?
@bbnCRLB
7 жыл бұрын
Noise cancelling headphone makes my throat dry and makes it difficult to swallow saliva. Does anyone have similar experience?
@boredphysicist
4 жыл бұрын
Called placebo affect mate.
@joseaurelianosandovalgarci1884
7 жыл бұрын
silence generator...very nice effect
@user-tn4nk1dj5m
7 жыл бұрын
this video was really helpful
@phi9249
7 жыл бұрын
excellent data
@DioXin
7 жыл бұрын
cant hear the uncanceled sound on 8:00 ish experiment
@codenamecody
7 жыл бұрын
I'm jealous of your ten thousand dollar oscilloscope.
@LGM4
7 жыл бұрын
Can active noise cancellation damage your hearing or affect your brain waves? Aso, can you hear inverted sound waves?
@Speechrezz
7 жыл бұрын
Of course you can hear inverted sound waves; for example an inverted sine wave is just the same as a sine wave with a phase shift of half its period.
@davidhutchinson1236
8 жыл бұрын
There have been reports of use of noise cancellation machines at the DNC. How can it be countered so as to not affect on demonstrators chants? Could a paper bullhorn direct the voices/sound away from the machine to confuse the machine? Feel the Bern my friends!
@bbnCRLB
7 жыл бұрын
You can find an electronic circuit that will generate a time delayed version of its input with a slight frequency shift. To disrupt the noise cancelling system further, have another speaker broadcasting the sounds on nearby surfaces to change direction of arrival of the sounds wave at the noise cancelling device. So in the end, time delay, slight frequency shift, and multipath will definitely knock the noise cancellation off.
@rambomw2
8 жыл бұрын
Is there a good DIY circuit, that can be made and installed on doors, just to silence your noisy cotenants?
@AlejandroRodriguez-qy3gh
8 жыл бұрын
Great video. What adaptive algorithm are you using? Thanks in advance
@juanantoniosotocabrera7045
5 жыл бұрын
nunca respondio :/
@MrCoffis
8 жыл бұрын
The way the speakers are set up it seems like you are creating a standing wave with nodes and antinodes...noise cancelation should be location specific no?
@boredphysicist
4 жыл бұрын
Always is. Noise cancellation could only be nonspecific to location in you had 1 object producing both waves but that is called turning the speaker off.
@Nik-by5mi
8 жыл бұрын
hmm... who would of thought.. more noise makes things more quite. amazing.
@GriffinMusicProduction
4 жыл бұрын
Nikola Tesla?
@alejs_fx
2 жыл бұрын
@@GriffinMusicProduction xD
@JackLe1127
8 жыл бұрын
Shifting 180 degrees only works if the signal you're trying to cancel is symmetrical. If the noise is not strictly symmetrical, which is always the case, you're just gonna add more noise to the output.
@Axel-ro7dn
7 жыл бұрын
The 180° degrees thing only applies to sinusoidal waves, what he probably meant by shifting 180° is inverting the noise
@JackLe1127
7 жыл бұрын
Axel it doesn't have to be sinusoidal wave. It can be saw tooth or square wave. It just has to be symmetrical. In the video, he changed the distance between the speakers, effectively mean shifting the phase.
@livium9184
6 жыл бұрын
I think that when he changed the distance between speakers, it was the wavelength that got changed, and not a phase shift. Also, I think you would have to measure the amplitude of the sound, not only the frequency, and try to match that with the anti phase sound to effectively nullify or reduce to unwanted noise.
@mehwishbatool2712
8 жыл бұрын
Hi, I build the same setup but I am unable to get the noise cancellation results. I am wondering where the problem is. I used the speakers but as two output terminals were not available so we cut the output stereo connector wire to make two terminals but it is not working we still cannot see the opposite phase sine wave. Any help would be greatly appreciated.
@gregorrice7806
8 жыл бұрын
Got any remedies for The Hum? Yes, that nasty underground sound, I call it. Where it's coming from no one can determine, probably a blasting from a transmitting tower somewhere, or underground wherein seems to many. Google 'The Hum' via John Dawes in UK, big site, and RSVP what we can do to 'cancel' or otherwise block this. You Can Do It! Thanks, Lad!
@JacobKinsley
8 жыл бұрын
Can't you just set the speaker to a negative value and it will absorb the sounds? (I'm joking btw)
@piplokk
7 жыл бұрын
Jacob Kinsley I
@chrisrosalez8619
4 жыл бұрын
Lol you just made my day😂
@BuddahBlueMage
8 жыл бұрын
Excellent presentation! I think you were moving the speaker a little far for the 5KHz test though. The speed of sound is about 1130Ft/s. If you divide that by the frequency the expected length of that is about two and a half inches. Divide that by half, about every inch you should hit it in phase and out of phase. Hope this helps!
@Surajkumar-wq2lc
8 жыл бұрын
Its not active noise cancellation. it is just a demonstration of destructive interference of sound waves.
@dannykong944
8 жыл бұрын
+suraj kumar (NoOneIsAtheistInThisWorld) That exactly is active noise cancelling. Active noise cancelling earphones will use a tiny microphone right outside the sound drivers to record ambient sound, and play an inverted sound engineered to cause destructive interference when it reaches your ear.
@LaidbackPotato
7 жыл бұрын
well that's how it works actually
@nageshwarsingh3255
8 жыл бұрын
can you please provide the microphone details used for ANC applications...?
@daledirkes1935
9 жыл бұрын
Where might I buy such a system for an large Office Space?
@gilgalad101
9 жыл бұрын
+Dale Dirkes Sorry, I don't know about the market for currently available commercial systems, other than those that come with some cars. This video was solely to demonstrate how active noise cancellation works. Bose may be able to develop a system for you, depending on how much you are willing to spend.
@mattmoreira210
9 жыл бұрын
Can you pleeease stop reading a script?!
@mattmoreira210
9 жыл бұрын
I meant, speak more naturally to the camera, using the script to guide the speech only, not reading it. ;)
@gilgalad101
9 жыл бұрын
+Matheus Moreira I had an outline, but did not use a script. Since this was a project for class, I was trying to make a video of somewhat high production value. Also, this was the first video I created where I provided an appreciable amount of narration. With that being said, thank you for your input. I'll keep it in mind for future videos.
@mattmoreira210
9 жыл бұрын
It was just a tip. ;)
@Potados46
9 жыл бұрын
Q. I wonder why it has certain point that noise cancellation was most effective when we use high frequency sound. I think the distance of two speakers doesnt matter, how do u think?
@deckmonkey1459
3 жыл бұрын
Watch Tech Ingredients video to see why the speaker distance matters.
@guimassaharus2
9 жыл бұрын
Which software do you use in this demonstration?
@gilgalad101
9 жыл бұрын
No software was used in the actual demonstration. An Agilent 33500B function generator, a Tektronix MSO4104 oscilloscope, and two Sony speakers were the only hardware used.
@SumitPalTube
9 жыл бұрын
Great demonstration.
@TheBruster1
9 жыл бұрын
Good video, now try an engine inside a box which is running at a constant speed. What kind of cancellation can you achieve if you use one speaker per surface, all sides and top (except the bottom), with a mike reading the sound inside and a second outside the box measuring the amount of cancellation? Is this a workable solution to at least reduce it somewhat?
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