On Fri, 4 Feb 2005, Jamie Guinan wrote:
> On Fri, 4 Feb 2005, Florin Andrei wrote:
>
> > On Fri, 2005-02-04 at 11:41 -0500, Jamie Guinan wrote:
> >
> > > As I understand it, the 4 analog inputs + 2 SPDIF inputs divide into 2
> > > channels (left/right) each, so you could record 12 tracks at once. But
> > > you could also think of it as 6 channels with left/right pan on each.
> >
> > No.
> > One input = one channel. Don't confuse balanced with stereo.
>
> Right.
>
> And each input (4 analog, 2 digital) can be sent independently to the L/R
> channels in the digital mix. So I thought it would be possible to record
> 12 channels of audio, each pair containing a L/R mix of the 6 total
> inputs, as in,
>
> $ arecord -c 12 -f S32_LE -r 48000 -D hw:1 output.wav
Ok, please excuse my confusion, I think I finally get it. Jan's post
cleared it up for me.
Fwiw, I tried that arecord command, pluged a live signal into
each of the 4 inputs one at a time on my Delta66 breakout box,
and examined the output in "sweep", it looked something like this,
1 --/\/\/\/\/\/-----------------------------------------------
2 -----------------/\/\/\/\/\/--------------------------------
3 --------------------------------/\/\/\/\/\/-----------------
4 ---------------------------------------------/\/\/\/\/\/----
5 ------------------------------------------------------------
6 ------------------------------------------------------------
7 ------------------------------------------------------------
8 ------------------------------------------------------------
9 ------------------------------------------------------------ *
10 ------------------------------------------------------------ *
D1 --/\/\/\/\/\/---------------------/\/\/\/\/\/--------------- (dmix)
D2 -----------------/\/\/\/\/\/----------------/\/\/\/\/\/---- (dmix)
So the ice1712 has 4 unused inputs on the Delta66. Oh, well,
its only silicon. :)
-Jamie
* (I don't have SPDIF inputs to test).
Received on Mon Feb 7 00:15:15 2005
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