CODEWITHSUNDEEP
c#.netaudionaudio
atomAltera
atomAltera

Reputation: 1781

Subtract output audio stream from input

I'm using NAudio to capture audio from microphone, but it also cuptures sound from speakers. How can I filter it out?

Upvotes: 0

Views: 293

Answers (1)

DrKoch
DrKoch

Reputation: 9772

This problems are called Noise Cancellation and/or Feedback Supression.

Both are (very) hard problems in digital signal processing and involve the estimation of a digital filter which approximates the transfer path.

Before you tackle such problems: it is probably better to:

  • switch the speaker off
  • use a better (directional) microphone

Upvotes: 2

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