Query regarding webrtcdsp/webrtcechorpbe echo cancellation using sync=false

[Ajit Warrier]

I had a quick question regarding the echo cancellation implementation that is new in gstreamer 1.10. The test loop:

gst-launch-1.0 autoaudiosrc ! webrtcdsp ! webrtcechoprobe ! autoaudiosink

works as expected.

However if the audio sink as sync=false, this does not work, and I can hear echo/feedback.

gst-launch-1.0 autoaudiosrc ! webrtcdsp ! webrtcechoprobe ! autoaudiosink sync=false

Is sync=true required for the echo cancellation algorithm ?

Thanks,

Ajit.

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[Olivier Crête-3]

On Mon, 2016-11-21 at 22:32 +0000, Ajit Warrier wrote:

 had a quick question regarding the echo cancellation implementation that is new in gstreamer 1.10. The test loop:

gst-launch-1.0 autoaudiosrc ! webrtcdsp ! webrtcechoprobe ! autoaudiosink

works as expected.

However if the audio sink as sync=false, this does not work, and I can hear echo/feedback.

gst-launch-1.0 autoaudiosrc ! webrtcdsp ! webrtcechoprobe ! autoaudiosink sync=false

Is sync=true required for the echo cancellation algorithm ?

Yes it is, the echo cancellationi needs to know when the output was played to compare it to what was recorded.

-- 
Olivier Crête
[hidden email]

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