From: Anthony (avan_at_uwm.edu)
Date: 06/11/03 06:47 EDT
From: Anthony <avan@uwm.edu>
Subject: Re: [Ardour-users] asoundrc for Delta66 and intel8x0 3 questions
Message-ID: <20030611104747.GB18625@ice_nine.wi.rr.com>
Date: Wed, 11 Jun 2003 05:47:47 -0500
G'day Allan,
Maybe you want this for other reasons than using with JACK/ardour,
but in this context you don't want to do this for two reasons:
* You could never expect to maintain sample sync. Rather I don't
know. It's too confusing...but you probably want to run jack
with a true hardware device because:
* I'd imagine there is a performance hit as ALSA must convert
from this mythical device to the native formats of each card.
Of course, YMMV.
If you're willing to sacrifice sample sync on say the intel8x0 then
you may still be able to take advantage of its outputs by making
a bridge with ecasound. Anyway, you don't really want to record from
the intel8x0 do you?
Start up jack with ice1712. Then as Kai suggested to me the other
day:
$ ecasound -i jack_auto,alsa_pcm -o alsa,intel8x0
The result is to create two jack input ports which correspond to the
intels playback channels. This is probably only good for providing a
playback monitor and no good for recording - there must be a buffer
in there somewhere. Let me know how it performs.
--ant
* Allan Klinbail <allank@labyrinth.net.au> [Jun 09 03 04:19]:
> (sorry about those who received this as a cross post... just trying all possible avenues)
>
> Hi All
>
> I've been trying to configure an asoundrc file for my Delta66 and Intel8x0
> (SIS645DX chipset... yes it works with all functionality including MIDI)
> cards.
>
> I have built the file at the bottom based on examples. I would like to
> convert it so that both cards are seen as one (purely for ease of
> playback monitoring.)
>
>
> 1. Can anyone confirm that I have done the right thing here to see the
> discreet mono inputs and S/PDIF and also access the intel8x0 card (as
> separate entities)?
>
> 2. Can anyone suggest how to convert this so both cards are seen as one
> (resulting in 6 analogue ins and outs and stereo S/PDIF) .
>
> 3. The intel8x0 seems locked at 48khz is there anything I can do to
> dither this to 44.1Khz without seriously impacting latency
>
> Here's what I've don so far
>
> # Asound.conf START
>
> pcm.main {
> type hw
> card 1
> device 2
> }
>
> pcm.ice1712 {
> type hw
> card 1
> device 1
> }
>
> ctl.ice1712 {
> type hw
> card 1
> }
>
>
> pcm.intel8x0 {
> type hw
> card 0
> }
>
> ctl.intel8x0 {
> type hw
> card 0
> }
>
> # adcdac 1
> pcm.c1 {
> type plug
> ttable.0.0 1
> slave.pcm ice1712
> }
>
> # adcdac 2
> pcm.c2 {
> type plug
> ttable.0.1 1
> slave.pcm ice1712
> }
>
> # adcdac 3
> pcm.c3 {
> type plug
> ttable.0.2 1
> slave.pcm ice1712
> }
>
>
> # adcdac 4
> pcm.c4 {
> type plug
> ttable.0.3 1
> slave.pcm ice1712
> }
> #SPDIF channels only
> pcm.ice1712_spdif {
> type plug
> ttable.0.8 1
> ttable.1.9 1
> slave.pcm ice1712
> }
>
> # Asound.conf END
>
>
>
> cheers
>
> Allan Klinbail
>
>
>
> --
> Allan Klinbail <allank@labyrinth.net.au>
> --
> Allan Klinbail <allank@labyrinth.net.au>
>
>
>
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