<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Echo canclled sink is mono" href="https://bugs.freedesktop.org/show_bug.cgi?id=62040#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Echo canclled sink is mono" href="https://bugs.freedesktop.org/show_bug.cgi?id=62040">bug 62040</a> from <a class="email" href="mailto:tanuk@iki.fi" title="Tanu Kaskinen <tanuk@iki.fi>"> Tanu Kaskinen</a> <pre>I tried this, and indeed at least the speex canceller doesn't support anything but mono: E: [pulseaudio] speex.c: AGC, denoising and echo suppression only work with channels=1 I presume that it's a limitation of the speex algorithm. I'm not a DSP engineer, so at least I will probably not do anything about this. Out of curiosity, what use case requires proper (not downmixed to mono and then duplicated to 6 channels) 5.1 output and echo cancellation at the same time?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>