[pulseaudio-discuss] PulseAudio + USB Microphone, how use it without recording?

Miguel Beltran R. yourpadre at gmail.com
Sat Oct 16 12:19:56 PDT 2010

2010/10/16 Colin Guthrie <gmane at colin.guthr.ie>

> 'Twas brillig, and Miguel Beltran R. at 15/10/10 04:13 did gyre and gimble:
> > Hello List
> >
> > I have some music videos with lyrics to use it as a karaoke, but when I
> > reproduce the video and try to sing using the microphone don't work like
> > I expected. There no sound out of mic.
> > Using pavucontrol I saw in "Input Devices" that appeared a "Logitech USB
> > Microphone Analog Mono" and the meter is moving, just haven't sound out.
> >
> > What I must do? I want heard the video and Mic
> What you technically need to do is record from the mic and then play it
> back through some speakers.
> PA ships with a convenient way to do this in the form of module-loopback.
> It basically does this and will also resample as needed to deal with
> slight variations in the different device clocks involved (e.g. your mic
> may record at 441002 Hz and your output device may consume at 440998 Hz).
> Because it has to resample there may be a slight delay.
> But: pactl load-module module-loopback
> Then use pavucontrol and under the recording and playback tabs you will
> see a new stream. Simply move this stream to the right devices for input
> and output and you will be able to hear the mic on the appropriate output.
> Hope that helps
> Col
Thanks Col, it worked
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