Don't forget Stephane's other project:
Multitrack, knobbed, and high quality sound. Instantly installs a laser-guided focuser behind your eyes - unless you start playing with the settings. Haha.
MyNoise – Background Noise Generators
71–80 of 104 posts
Re: MyNoise – Background Noise Generators
#72Thanks for the kind mention! I am Stephane, the person behind that website/project. I see a lot of people having concerns about the title - Background Sound Canceller - and they are right. That title is not mine, but poster's own. I describe my project as "Background Noise Generators", or sometimes as as "Non-Distracting Noises and Music". They are not sound cancellers but sound maskers . The idea is to create a nois…
Thank you for all you do. "Irish Coast" used to put baby no.3 to sleep like a miracle. No.4 preferred "White Rain".
Re: MyNoise – Background Noise Generators
#73Thanks for the kind mention! I am Stephane, the person behind that website/project. I see a lot of people having concerns about the title - Background Sound Canceller - and they are right. That title is not mine, but poster's own. I describe my project as "Background Noise Generators", or sometimes as as "Non-Distracting Noises and Music". They are not sound cancellers but sound maskers . The idea is to create a nois…
I love this thing and have spent many hours making elaborate setups, wonderful work!
Re: MyNoise – Background Noise Generators
#74I expected a website offering to use your microphone to record, invert and cancel background noise via the speakers. Turns out the website is offering prerecorded sounds instead, not really cancelling anything. Still though, surely someone has tried my idea? It would likely need some adjustability to match the phase delay between microphone and ears-via-speakers but I guess it could work.
Turns out the website is offering prerecorded sounds instead, not really cancelling anything.
Kind of. Not full prerecorded like you'd get in a long audio track, but generators instead with multiple tracks each based on samples. This offers a huge range of customization ability, but also allows the amazing 'animate' feature that allows a constantly changing background.
In the app if you tap where it says 'Default' on a sound you can also choose other preset 'scenes' using the same generators which can be very different - for example the Folk Trad sound set, which has scenes for Breathing Pipe, Calm Blow, Circular Breath, Harmony, Haunting Flutes, Highlander, The Drone and Throat Pipes.
Re: MyNoise – Background Noise Generators
#75Earlier quoted context omitted.
I meant circuits specifically designed for noise cancellation. like in headphones
ASUS makes a noise canceling headphone adapter, and I have a chip built into my Asus motherboard that does it. https://shop.asus.com/us/90yh02l1-b2ua00-ai-noise-canceling-...
That appears to be a "noise canceling" microphone adapter. It doesn't even claim to offer headphone noise canceling, it's just for microphones. There are two dots that might possibly be microphones for active noise cancellation, but I suspect that they would be too far away from your face to be effective. Most likely there is just a DSP inside that tries to filter out background noise heuristically.
Re: MyNoise – Background Noise Generators
#76Thanks for the kind mention! I am Stephane, the person behind that website/project. I see a lot of people having concerns about the title - Background Sound Canceller - and they are right. That title is not mine, but poster's own. I describe my project as "Background Noise Generators", or sometimes as as "Non-Distracting Noises and Music". They are not sound cancellers but sound maskers . The idea is to create a nois…
Thank you Stephane for MyNoise! Your site is very valuable to me. I hope it never disappears. I'll continue to donate periodically.
Re: MyNoise – Background Noise Generators
#77Earlier quoted context omitted.
I don't think it can be done.. active noise cancellation needs to be really really fast and is done using dedicated hardware afaik.
How fast can it need to be? The output frequency would be below 20kHz so latency of 50us or so, probably too fast for a userland app but I'd expect it to be doable in a driver or in the OS?
it effectively needs to be fatter than the speed of sound. sound needs to hit the mic of the noise cancelling device, its inverse needs to be found before the sound hits your ear drums so it can be played at exactly the same time. all this needs to happen in the time it takes for the sound to travel from the devide to your ears. super fucking fast.
Re: MyNoise – Background Noise Generators
#78Earlier quoted context omitted.
How fast can it need to be? The output frequency would be below 20kHz so latency of 50us or so, probably too fast for a userland app but I'd expect it to be doable in a driver or in the OS?
I get a similar answer but through a wildly different path: I think you have to detect the sound with a microphone, then come up with the canceling waveform before the sound hits your headphone drivers (as they will be generating the canceling waveform). Given the typical size of headphones, it would be something like 2cm/(34300cm/s) ~ 60us Although, sound travels faster through solids, so might want to be a little q…
wonder if there's some kind of "virtual microphone" like device that let's you hear sounds further away than a mic in the headset. Google fu showed some ultrasonic virtual microphone but idk if it is useful here..
Re: MyNoise – Background Noise Generators
#79I expected a website offering to use your microphone to record, invert and cancel background noise via the speakers. Turns out the website is offering prerecorded sounds instead, not really cancelling anything. Still though, surely someone has tried my idea? It would likely need some adjustability to match the phase delay between microphone and ears-via-speakers but I guess it could work.
> Still though, surely someone has tried my idea Well, AFAIK some cars have active noise cancelation. I wonder why we don't have it at homes, after all they are both confined spaces. If general purpose computation and software wouldn't cut it, why we don't have whatever they have in those cars? A lot of money is spent on noise insulation on buildings, so the demand and the money must be there.
I don't know anything about the car noise cancellation tech, but I would hazard a guess that instead of using microphones to pick up noises and generate counter-noises in real time, car manufacturers can just create the right anti-noise for their engine sounds, for the sounds of wind hitting the car body, etc. and use them without needing anything particularly clever going on?
Re: MyNoise – Background Noise Generators
#80it's actually quite nice