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MyNoise – Background Noise Generators

mynoise.net

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Re: MyNoise – Background Noise Generators

#11

Post by shreyshnaccount »

nolok wrote: post #9
shreyshnaccount wrote: post #8

Earlier 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.

> is done using dedicated hardware afaik. Agree with the first part of your answer, but not sure what you mean by this second part. There is dedicated hardware for it, then there are solution using your generic gpu (ex Nvidia RTX Voice), then there are solution using your generic cpu (ex whatever the name of the one discord desktop client provides).

isn't that different? i thought that's noise isolation that runs using a Neural Net. i don't think it's as real time as you'd need for noise cancellation

Re: MyNoise – Background Noise Generators

#12

Post by shreyshnaccount »

nolok wrote: post #9
shreyshnaccount wrote: post #8

Earlier 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.

> is done using dedicated hardware afaik. Agree with the first part of your answer, but not sure what you mean by this second part. There is dedicated hardware for it, then there are solution using your generic gpu (ex Nvidia RTX Voice), then there are solution using your generic cpu (ex whatever the name of the one discord desktop client provides).

I meant circuits specifically designed for noise cancellation. like in headphones

Re: MyNoise – Background Noise Generators

#13

Post by jwr »

If you're looking for other options: I've been using the "Iceland White" app and love it. Very high quality recordings of things that sound like white noice (waterfalls and sea coasts). A sister app of the also excellent "Naturespace" (best quality nature recordings I've listened to).

Re: MyNoise – Background Noise Generators

#14

Post by naillo »

shreyshnaccount wrote: post #8
ssl232 wrote: post #7

I 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.

I don't think it can be done.. active noise cancellation needs to be really really fast and is done using dedicated hardware afaik.

I suspect it could be done for sort of periodic noise (or possibly with a predictive net). I've always wanted to implement this on the web but never got around to it.

Re: MyNoise – Background Noise Generators

#16

Post by mysterydip »

ssl232 wrote: post #7

I 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.

Could it work for cancelling tinnitus? Just have an inverse of that sound playing, with some controls for frequency adjustment for individuals.

Re: MyNoise – Background Noise Generators

#17

Post by the__alchemist »

shreyshnaccount wrote: post #8
ssl232 wrote: post #7

I 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.

I don't think it can be done.. active noise cancellation needs to be really really fast and is done using dedicated hardware afaik.

Yea. Relatively straightforward on an MCU that supports audio, and running non-OS firmware. I think anything that runs through an OS or schedule would introduce too much latency.

So, it can be on a generic MCU, but not one where the algorithm is competing for CPU time with other processes.

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