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Technical discussions about echo cancellation and adaptive filtering in general.

  

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Howling detection - Pierre Audenard - Oct 15 8:19:00 2001



Hello,

How to detect howling (strong sinusoids due to the acoustic echo feedback) in
speech signal ?

I tried LMS - IIR Filtering (c.f. " Implementation and Evaluation of echo
cancellation algorithms ", by Sundar G Sankaran) , but I have problems with its
implementation on a fixed-point DSP.
Moreover i think this detector will not work if there is more than one sinusoid
in the signal.

Thank you




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