[pulseaudio-discuss] USB microphone works, monitoring doesn't

[Joe daLuz]

Well, thanks very much for pointing me to that ticket, as the command line
there (pacat -r -d source | pacat -p -d sink ) provided exactly the
capability I was looking for!

Best regards,

Joe daLuz


On Mon, Aug 10, 2009 at 4:20 PM, Lennart Poettering
<lennart at poettering.net>wrote:

> On Mon, 10.08.09 16:09, Joe daLuz (jdaluz at gmail.com) wrote:
>
> > Sorry if I was unclear. Let me try again.
> >
> > The USB microphone captures audio as indicated by the successful
> recording
> > and volume meter display. But I cannot hear what is being captured in my
> > headphones *during* recording. (The same is true if I use speakers
> instead
> > of headphones, though I wouldn't normally do that due to feedback).I can
> > hear the captured audio when I play it back afterward.
> >
> > I did not have this problem in the past with a microphone connected to
> mic
> > in on the same sound card that the speakers/headphones are connected to.
> So
> > I suspect there is something more complex I need to do to get a USB
> > microphone appearing as a separate "sound card" to work the same way.
> >
> > I provided "list_cards" output because I wasn't sure what information was
> > needed to diagnose this. Please let me know if there is anything else you
> > need.
>
> Ah, so you want the USB audio input to be sent directly to your PCI
> sound card's output?
>
> Hmm, this is not supported. It's a much requested feature that we
> allow direct connections between sources and sinks
> (http://pulseaudio.org/ticket/90).
>
> However, so far nobody worked on that. THis is much more complex than
> it might seem sicne your sound card's clocks might deviate. It's
> doable but not trivial. Code that handles clock deviations has already
> been implemented in module-combine, so this could be used as a blueprint.
>
> Patches welcome!
>
> Lennart
>
> --
> Lennart Poettering                        Red Hat, Inc.
> lennart [at] poettering [dot] net
> http://0pointer.net/lennart/           GnuPG 0x1A015CC4
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