On Thu, Aug 01, 2002 at 03:55:34PM +0400, ardient wrote: > > > OK, but you won't have "3 stereo channels in PCM Out 1 - PCM Out 3". > > PCM 1 can only contain one (mono) signal. Likewise for PCM 2, 3, ... > > > > I use envy24control program.There are "left" and "right" slidebars for each > PCM. This is why I think that PCM can be stereo.
Oh, I see what you're thinking. That's the "monitor mixer." It's not much like a typical consumer soundcard mixer. The ice1712 provides a built-in stereo-output mixer which can take feeds from all of the inputs and outputs, and put its stereo output L and R into any 2 of the outputs. The idea is that you might use this mix while working with a DAW to construct e.g. a headphone mix for the musicians. You could also use it to mix various input channels into a single source for a stereo recording, but IMHO it's a bit clunky for that and it's better to use an application with its own decent mixer. In the monitor mixer, it's true that you can take an input source and put it in varying amounts to the L and R sides of the monitor mix. But each *source* (PCM in 1, PCM in 2...) is a single mono signal. (IMHO, the envy24control monitor interface is a bit clunky - I'd rather see a single volume control and a pan slider for each PCM source.) In the, er, routing matrix (I forget what envy24control calls it, and my desktop computer is seriously broken right now so I can't check!), you can connect various inputs to various outputs. Two of the output options are something like "PCM mix L" and "PCM mix R". This is the output from the monitor mixer. Note that if you don't select "PCM mix" in the routing matrix, the monitor mixer has absolutely no effect on anything else. This was a source of some confusion for me when I first got my ice1712 card. > On even simple soundcard exists one stereo PCM. > And using aumix program we can change balance, > ie this PCM is stereo. > > Is it right or I have mistaken? That's right, but if your ICE1712 card has, say, 6 mono inputs, you're not going to magically turn them into 6 stereo inputs. You can think of it as 6 mono channels or 3 stereo pairs or whatever you like. But on these cards, the routing is up to you; there's no built-in concept of "stereo" *except* in the monitor mixer. Notice that there's another tab in the mixer which shows you the volume controls for each ADC and DAC. They're not grouped in stereo pairs, and each input or output has only a single slider. Paul Winkler home: http://www.slinkp.com "Muppet Labs, where the future is made - today!" ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
