Roger, First, thanks for taking time to follow this through with me. This has been helpful and I do at least feel like I'm starting to understand what the software is tying to do.
When I tried some amixer commands I was disappointed to find that they do nothing at all on my machine. No command I tried seems to control volume to my headphones or speakers at all. I guess the HDSP 9652 is not supported at this time. Makes me feel like I bought the wrong product. Anyway, I will continue to study and understand this stuff and hope that one day some of these features actually work. Thanks for your help! Cheers, Mark On Mon, 2003-01-20 at 06:25, Roger Williams wrote: > >>>>> Mark Knecht <[EMAIL PROTECTED]> writes: > > > I can think of my HDSP mixer as a device with 52 inputs and 26 > > outputs. > > In the case of the 9652, you don't have headphone outputs, so you > don't have the Digiface's 27th and 28th outputs. > > > 1) 26 mixer inputs come from the HDSP's physical inputs > > - numbered 0-25 in the mixer > > - called Alsa_pcm:capture_1 - 26 in Jack > > Yup. > > > 2) 26 mixer inputs come from the Alsa:playback group > > - numbered 26-51 in the mixer > > - called Alsa_pcm:playback_1 - 26 in Jack > > Yup. > > > 1) 26 mixer outputs come from the mixer > > - numbered 0-25 out of the mixer > > Yup. > > > By default, the HDSP driver then takes the Alsa_pcm:playback group > > and hooks them to (more or less) matching output destinations: > > Perhaps, but I'm not sure about that. I always explicitly set up the > HDSP mixer routes. I just removed all of my ALSA modules, removed the > HDSP Cardbus card, power-cycled the Multiface, and reinstalled > everything; and I had to issue an "amixer cset numid=5 26,0,32768" > command to connect alsa_pcm:playback_1 to Multiface output 1. > > > so that if I connect capture_1 to playback_1 then whatever comes > > in on the ADAT-1, channel 0 input will get sent back out on > > ADAT-1, channel 1 output. > > You don't connect capture_1 to playback_1, because playback_1 is a > signal coming from ALSA, going into the HDSP mixer. But you _can_ > connect the signal arriving on the ADAT1:1 input (which _also_ drives > ALSA's capture_1 input) to the ADAT1:1 output with an "amixer cset > numid=5 0,0,32768" command. (But playback_1 isn't routed to the > ADAT1:1 output except by coincidence or a default setting -- playback_1 > doesn't have anything to do with your ADAT1:1 input -> ADAT1:1 output > connection.) > > > amixer cset numid=5 0,0,32768 > > amixer cset numid=5 1,1,32768 > > ... > > amixer cset numid=5 25,25,32768 > > > which would route each physical input to each physical output, 1 > > for 1, at a volume of unity gain. (As per Marcus's notes again.) > > Yup. > > > What is not at all clear yet is whether a single input can go to > > multiple outs with different gains. For instance, if I execute: > > > amixer cset numid=5 0,0,10000 > > amixer cset numid=5 0,1,30000 > > Sure, that works just fine. I'll run a combined setup like this: > > Monitor submix > ============================== > amixer cset numid=5 0,26,20000 > amixer cset numid=5 1,27,20000 > amixer cset numid=5 2,26,15000 > amixer cset numid=5 3,27,15000 > amixer cset numid=5 4,26,10000 > amixer cset numid=5 5,27,10000 > > DAT safety recording > ============================== > amixer cset numid=5 0,24,16384 > amixer cset numid=5 1,25,16384 > amixer cset numid=5 2,24,12288 > amixer cset numid=5 3,25,12288 > amixer cset numid=5 4,24,8192 > amixer cset numid=5 5,25,8192 > > The changes I make in the first group (headphones submix) don't have > any effect on the signal being recorded by the DAT, which is set up in > the second group. > > > I am attempting to take physical input 0 and sending it to both > > the left and right outputs, but at different volumes. Is this > > legal? > > Sure. Consider RME's description of TotalMix, which is "nothing more" > than a software interface (OK, I'm a hardware guy) to the HDSP mixer: > > - setting up delay-free submixes (headphone mixes) > - unlimited routing of inputs and outputs (free utilisation, patchbay function) > - distributing signals to several outputs at a time > - simultaneous playback of different programs over only one stereo channel > - mixing of the input signal to the playback signal (complete ASIO Direct >Monitoring) > - integration of external devices (effects etc). in real-time > - mixdown of three ADAT inputs to one (realizing two additional inputs) > > RME calls the HDSP mixer in the Multiface a "720 channel" mixer, and > the one in the Digiface "1456 channels". (The 9652 would be 1352 > channels, because it doesn't have the headphone outputs.) For the > Multiface, that's [18 hardware input channels + 18 playback channels] > x 20 hardware output channels. (There are only 18 playback channels > because playback_8-15 aren't used in the Multiface.) > > > In my case, I use Alsa_pcm:playback_1/2 for my main speakers, and > > playback_3/4 for my headphones. The problem I've been having is that I > > didn't know how to set the volume on my speakers with no mixer. Using > > this information, I could execute: > > > amixer cset numid=5 26,0,3000 > > amixer cset numid=5 27,1,3000 > > > and now my playback_1/2 should come out of my speakers, but at > > considerably reduced volumes. > > Yup. > > -- > Roger Williams <[EMAIL PROTECTED]> > Qux Tool & Die, Middleborough, Massachusetts > // Omne tulit punctum qui misquit utile dulci // > > > ------------------------------------------------------- > This SF.NET email is sponsored by: FREE SSL Guide from Thawte > are you planning your Web Server Security? Click here to get a FREE > Thawte SSL guide and find the answers to all your SSL security issues. > http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en > _______________________________________________ > Alsa-devel mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/alsa-devel ------------------------------------------------------- This SF.NET email is sponsored by: FREE SSL Guide from Thawte are you planning your Web Server Security? Click here to get a FREE Thawte SSL guide and find the answers to all your SSL security issues. http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0026en _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
