webrtcechoprobe does not work

[GStreamer-devel mailing list]

Hi! I'm trying to use webrtcdsp echo cancellation.

alsasrc ! audioconvert ! webrtcdsp ! webrtcechoprobe ! avenc_g726
bitrate=32000 ! rtpg726pay  ! udpsink port=

But is is not working for me.



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[GStreamer-devel mailing list]

Le ven. 30 avr. 2021 06 h 45, ALex_K via gstreamer-devel <[hidden email]> a écrit :

Hi! I'm trying to use webrtcdsp echo cancellation.

alsasrc ! audioconvert ! webrtcdsp ! webrtcechoprobe ! avenc_g726
bitrate=32000 ! rtpg726pay  ! udpsink port=

But is is not working for me.

This is an incorrect usage of these elements. The probe needs to be next to an audio sink (e.g. before alsasink/pulsesink). The probe monitors what goes to your loud speaker so it can be removed from the stream coming from your microphone (alsasrc). Some explanation can be found here.

 https://ndufresne.ca/2016/06/gstreamer-echo-canceller/

P.s. alsasink introduce 200ms of latency by default, which is too much for echo cancellation. Consider reducing the buffer-time property).

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