Re: f13 pulse and passthrough

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On 12 October 2010 14:16, Tim <ignored_mailbox@xxxxxxxxxxxx> wrote:
> On Mon, 2010-10-11 at 23:16 +0100, Ian Malone wrote:
>> I've had a look and the only thing I can find on this is an unresolved
>> bug report. Which is odd, because prior to pulse every sound system I
>> ever used let you play the sound in directly to sound out. Anyway the
>> situation is this: I'd like to be able to play a guitar through my
>> sound card and be able to listen to backing tracks and other things at
>> the same time. The suggested "pacmd load-module module-loopback" isn't
>> viable as it has latency. JackD works fine for guitar (and I can use
>> things like rakarrack or guitarix which are good fun), but using JACK
>> seems to mean I can't use other sound sources (presumably it connects
>> to ALSA).
>
> I think you're going to have to clearly define what you mean by pass
> through the audio, because you've brought up two very different things,
> describing what you want to do, and what interests you.
>
> To me, that means sound going into an input socket, and the sound card's
> audio mixer passing it through to the output, by turning up a monitor
> fader. ÂThis requires nothing more than to control the hardware mixer in
> the sound card. ÂThe various Gnome or KDE volume controls should be able
> to do this for you, or alsamixer through the console.
>

That's precisely what I want to do. It no longer seems to happen,
possibly this is something to do with my driver, but I've adjusted all
the controls I can see through Gnome. I'll have a go at alsamixer.

> To others, they might be thinking of inputting audio, processing it
> through the computer, and outputting the end result (with or without any
> effects). ÂThis could be done through pulse, or JACK. ÂBut would require
> a system that could *play* your inputted audio at the same time as
> playing your backing tracks.
>

I agree this is different. Being able to do effects processing at the
same time is attractive, but that's a more complex scenario and I'd
actually be happy with just being able to monitor the line in (as in
your hardware mixer paragraph) and I can't see where to switch it on.

Thanks for your help.
-- 
imalone
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