21 Oct
2009
21 Oct
'09
3:51 p.m.
Hello all.
I am new to the list. However I am not new to the Linux audio community. ;)
Strange though that I never really heard/read about it. Anyhow -- here I am.
Let see if I can find a solution to my challenge.
I am running latest Alsa 1.0.21b. I just installed a RME HDSP 9632.
My challenge: The machine is supposed to run headless.
This requires an automatic activation of the card. Some channels and volume
have to be initialized during startup without X being up and running.
As it seems without starting up HDSPmixer incl. preset it is not possible to
get the card going.
However: The amixer control seems to allow to control the "Mixer" control
with three variables.
I do not have a clue how to do the intital setting via amixer - is it
possible at all - what logic is behind it?
Would be great if somebody could sched some light on the subject.
Interesting to know would be how to achieve a "neutral" setting in terms of
volume control. And how to read out the current status.
THX a lot
\Klaus
P.S. Anybody ever thought to transfer HDSPMixer to commandline/ncurses?
21 Oct
21 Oct
5:33 p.m.
Hi,
it is possible to control the hdsp mixer via amixer. Here is what I use
to route software out 1+2 to ADAT1 1+2 and SPDIF (on an HDSP 9652), it
is part of /etc/rc.local:
/usr/bin/amixer -q -D hw:DSP cset numid=5 26,24,32768
/usr/bin/amixer -q -D hw:DSP cset numid=5 27,25,32768
/usr/bin/amixer -q -D hw:DSP cset numid=5 26,0,32768
/usr/bin/amixer -q -D hw:DSP cset numid=5 27,1,32768
The syntax is "source channel,target channel,gain", where source channel
is 0-25 = hardware in, 26-51 = software-out, and hardware channel 0-25
is hardware out (all on hdsp9652, but it is nearly the same on hdsp9632
and multiface). The gain is 32768 for maximum. I forgot, but sometimes
this means 0 dB and sometimes it means +6 dB.
Once I was thinking of implementing a command line application of
hdspmixer with OSC interface, however I gave up because I don't need it
any more (and most of it is supported by amixer). And if I remember well
Florian Faber mentioned that he was implementing something similar.
-- Giso
Klaus Schulz wrote:
Hello all.
I am new to the list. However I am not new to the Linux audio community. ;)
Strange though that I never really heard/read about it. Anyhow -- here I
am.
Let see if I can find a solution to my challenge.
I am running latest Alsa 1.0.21b. I just installed a RME HDSP 9632.
My challenge: The machine is supposed to run headless.
This requires an automatic activation of the card. Some channels and
volume have to be initialized during startup without X being up and
running.
As it seems without starting up HDSPmixer incl. preset it is not
possible to get the card going.
However: The amixer control seems to allow to control the "Mixer"
control with three variables.
I do not have a clue how to do the intital setting via amixer - is it
possible at all - what logic is behind it?
Would be great if somebody could sched some light on the subject.
Interesting to know would be how to achieve a "neutral" setting in terms
of volume control. And how to read out the current status.
THX a lot
\Klaus
P.S. Anybody ever thought to transfer HDSPMixer to commandline/ncurses?
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5:43 p.m.
Giso Grimm wrote:
Once I was thinking of implementing a command line
application of
hdspmixer with OSC interface, however I gave up because I don't need it
any more (and most of it is supported by amixer). And if I remember well
Florian Faber mentioned that he was implementing something similar.
Only for the hdspe series. But of course somebody can backport it..
Flo
--
Machines can do the work, so people have time to think.
public key DA43FEF4 x-hkp://wwwkeys.eu.pgp.net
22 Oct
22 Oct
9:41 a.m.
Florian Faber wrote:
Giso Grimm wrote:
Florian, what is it you are doing there exactly? Have always been
interested in modifications to hdspmixer. Perhaps this can be a step
into the right direction?
lg, P
Once I was thinking of implementing a command
line application of
hdspmixer with OSC interface, however I gave up because I don't need it
any more (and most of it is supported by amixer). And if I remember well
Florian Faber mentioned that he was implementing something similar.
Only for the hdspe series. But of course somebody can backport it..
Flo
5853
days inactive
5854
days old
linux-audio-user@lists.linuxaudio.org
3 comments
4 participants
participants (4)
-
Florian Faber -
Giso Grimm -
Klaus Schulz -
Peter Plessas