Hi,
The idea of the decorrelation is to sightly modify the playback signal
*before* playing it, so as to improve the AEC's performance. It's only
useful for multi-channel echo cancellation.
Jean-Marc
danflu at uninet.com.br a ?crit :> Please,
>
>
> I'm looking at speex rc1 echo_cancellation API docs and I
> found there is now a funcion for doing decorrelation:
>
> void speex_decorrelate(
> SpeexDecorrState * st,
> const spx_int16_t * in,
> spx_int16_t * out,
> int strength)
>
> How does it fit to the speex_echo_cancellation function ?
>
> When removing echo from multiple channels I need to
> decorrelate the input mic first and then put the
> decorrelation output in the rec parameter of
> speex_echo_cancellation ? I didn't get the point on how to
> connect these blocks together (decorrelation and echo
> cancellation)...
>
> Thank you very much,
> Daniel
>
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