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).
