2011/9/15 Lin, Mengdong <mengdong.lin at intel.com>: > I wonder whether module-echo-cancel can support the following features, > besides echo reduction during a call: > > > > (1)???? Reduce the echo of myself during audio recording in a room I'm not sure about what you mean here precisely. But in general this isn't called echo, but feedback. The only difference between the two is that with echo you have a large (~ > 20ms) delay and you can here two distinct versions of the sound. With feedback the delay is in the order of a typical wavelength (~ < 5ms) and you can hear a (often high-pitched) ringing sound. The obvious solution would be not playing back the recorded audio over the speakers. Is there any particular reason you want to hear yourself? And if the recording is for musical purposes, I'd strongly advise to get a decent microphone. I mean, when a band is performing on stage they can hear themselves over the monitor quite loud, but there's no feedback and no echo-cancelling is used. (wel actually there are devices called feedback-killers, but those are more automatic equalizers and are generally not used for music event, but rather for speech) Maarten > (2) Reduce the background noise > > I saw module-echo-cancel has an argument ?denoise? but by default it?s > disabled. Does it work? > > > > How about the effect if module-echo-cancel can support these features? Could > someone provide some evaluation data? Great thanks! > > > > -Mengdong > > > > _______________________________________________ > pulseaudio-discuss mailing list > pulseaudio-discuss at lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/pulseaudio-discuss > >
