[Speex-dev] Stereo AEC

[Jean-Marc Valin]

Hi,

The preprocessor doesn't work yet with the multi-channel AEC.

	Jean-Marc

On 2010-02-09 09:58, Nicholas Xu wrote:
> Hi,
>
> Can anybody show me how to enable stereo AEC, I tried with the
> following code and the result is bad, degraded output.
>
> Init:
>
> ec_state = speex_echo_state_init_mc(frame_size, aec_tail, 2, 2);
> speex_echo_ctl(ec_state, SPEEX_ECHO_SET_SAMPLING_RATE,&sample_rate);
>
> preprocess_state_left = speex_preprocess_state_init(frame_size, sample_rate);
> preprocess_state_right = speex_preprocess_state_init(frame_size, sample_rate);
>
> speex_preprocess_ctl(preprocess_state_left ,
> SPEEX_PREPROCESS_SET_ECHO_STATE, ec_state );
> speex_preprocess_ctl(preprocess_state_right ,
> SPEEX_PREPROCESS_SET_ECHO_STATE, ec_state );
>
> AEC:
>
> speex_echo_cancellation(ec_state, mic, echo_ref, output);
> speex_preprocess_run(preprocess_state_left, output);
> speex_preprocess_run(preprocess_state_right, output);
>
> Is there anything wrong with my code?
>
> Thanks in advance.
> Nicholas
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>