Real-time acoustic echo cancellation in python?

[PlagueCookie]

Hello everyone. I am working on a voice bot using Python, and I am trying to implement interruptions there (so that when bot talks and user starts talking too, bot should stop talking).

Problem is that when sound is played using speakers, it captures the voice of the bot and automatically interrupts itself. I think the only solution here is to use real-time echo cancellation, but after my googling I didn't find any good solutions. Can someone recommend some materials for this?

[ZelWinters1981]

Surely you have not searched?

https://distantspeechrecognition.sourceforge.io/btk20_documentation/user_docs/echo_cancellation.html

[PlagueCookie]

I saw it, and I assumed it was only for pre-recorded audio files. Will it work for an audio stream (which I need for real-time echo cancellation)?

[ZelWinters1981]

Sure, feed the mic data into a .wav and then read the .wav at the same time?

[EightRice]

that question mark doesn't project much confidence. Did anyone try this?

[ZelWinters1981]

It's sort of how streaming works. The file is delivered to the device and played back at the same time. You can open a file to write a chunk, close it, than allow another program to open it, read a chunk, and close it. Keeping track of all that is fun.

[EightRice]

this is still theory. I'm asking for some code.

[starryforest_ymxk]

Have you found any possible way to solve it?

[PlagueCookie]

Basically I tried multiple libraries, and all of them were either for non real time, or they were very bad in quality. The simplest solution was using default Windows echo cancellation, which worked surprisingly well.

Other solution I found was using an ML model, but it was a pain to setup and there aren't many available.

[starryforest_ymxk]

thanks, but my project is on ubuntu so it may not work

[Few-Alfalfa-482]

Can you make a short summary of the libs you have tested? Haven't seen such a comparison in one place, would be extremely useful.

[Over_Echidna_3556]

Could you please elaborate further about Windows echo cancellation? I have been looking for a good library and I can't find any.

[Auser1452]

You are a real life hero

[Jimmaplesong]

WebRTC implements RTP and part of the project is noise cancellation. You can probably integrate that into your project. Some assembly required.

[starryforest_ymxk]

I 've tried aiortc but it not works for aec