Using filter_audio as pipe stream filter about filter_audio

[GrayHatter]

I'm sure you could write something that would do this. I don't know of any that already exist.

IIRC filter audio works by filtering out the frequencies of sound that most human voices don't use. It can also do echo cancellation if you can get good timings out of your sound system.

That said, buying a cheap 10$ external mic is likely to be the best all around solution if it's an option.

[UralZima]

Thanks for answer.
You know, I tried so many things to get clear sound. I bought external mic and used with my laptop internal card. Then I bought external Creative Play USB sound card. Then a logitech headset with built-in sound card. Very big noise in all cases. Only disconnecting laptop from AC and running on battery finally removed the noise :)

[UralZima]

And finally, if anybody will want to do this, SOX helped me.
Write 1.5sec of noise from test.mp3, create profile
$ sox test.mp3 -t null /dev/null trim 0 1.5 noiseprof ~/noiseprofile
$ play test.mp3 noisered ~/noiseprofile
Sox can do pipes and delete noise in real time.

[GrayHatter]

@UralZima you're awesome for coming back to close this issue with a well explained solution!

Thanks mate!