on Saturday 07/06/2002 Roland Kuhn([EMAIL PROTECTED]) wrote
> On Fri, 5 Jul 2002, John Covici wrote:
>
> > Could some kind person answer a few questions about the controls of
> > the ice1712.
> >
> I hope so ;-) Which card do you actually have? My experience is limited to
> the Hoontech SoundTrack DSP24 Value and I have yet to test the SPDIF
> capabilities. However, I dived somewhat into the code. Hope it
> helped;-)
I have the Midiman audilfile 24/96 which is mainly meant for digital
sources.
>
> > I have the manual for the card and I use it with that other operating
> > system all the time, but I cannot figure out how the alsa controls
> > correspond.
> >
> > What I would like to do more specifically is playback through the
> > spdiff out interface, set the sample rate to 44.100 khz, to record I
> > have to set the clock and sample rate to spdiff and after recording
> > is over set it back to internal. I usually want to record from the
> > sp/diff input as well.
> >
I found some controls "iec958 Playback Default" which can be changed
but its a number of probably hex digits whose meaning I don't know.
There is an Iec958 Playback Stream which says inactive in its comment
should I ignore that one?
I found Iec958 Master as a boolean so I can turn that on for playback.
I found something called "H/w Playback Route" which has many possible
values -- the only ones to do with iec958 say iec958 In L and R -- is
that how you play through the sp/diff out by setting the hw playback
route to this value? And should I use l or r for stereo programs?
And there is another control of the same name but an index 1 what is
this?
I also have two iec958 playbback routes with one of them having
index 1.
Many of these controls have 12 enumerations 0 to pcmout and hw
numbers except the last ones which are the iec958 and digital mixer
whatever that is.
So you see why I need some help on these -- its hard to tell what all
these do.
> I don't know about the recording, but the selection of the source for the
> SPDIF output and external/internal clock can be made in /etc/asound.conf.
> You would have to create two versions of this file (it comes from alsactl
> -store) for internal/external clock and load them in turn with alsactl
> -restore (I have forgotten the flag to specify a filename, but it is in
> the manpage). These settings are near the end of the file and the names
> are "Multi Track IEC958 Master" for the internal/external clock setting
> and "IEC958 Playback Route" for the selection of what to play on the SPDIF
> output. You would have to set the Master setting to on/off in the two
> config files and the Route to "Digital Mixer" to get the best control over
> what happens.
>
> There also is the ncurses based program alsamixer which lets you set the
> volume for the SPDIF input, and I think it even lets you change the
> internal/external clock master with the "mute" (m) switch, when the cursor
> is on the appropriate column. If this is overkill for you, I also remember
> to have switched things like that with amixer, but you would have to read
> the manpage as the command line syntax is not truly intuitive.
>
> Ciao,
> Roland
>
> +---------------------------+-------------------------+
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> | Physik-Department E18 | Raum 3558 |
> | James-Franck-Str. | Telefon 089/289-12592 |
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>
--
John Covici
[EMAIL PROTECTED]
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