Subject: Re: [linux-audio-dev] HDSP + cardbus
From: D R Holsbeck (drh_AT_niptron.com)
Date: Thu Sep 19 2002 - 17:38:50 EEST
Hmm I guess Ill respond to myself ;-)
So I started doing some more digging. No matter how I load modules,
reboot, update source code, or click my heels, I can not get a decent
audio output using the cardbus interface. Unfortunatly our control room,
where my pci interface resides, has been too busy to do any testing with
the pci interface.
So here is what I looked at last night, the /proc/asound/card0/hdsp file
states that the rate is correct, 48k, and follows any settings changes
made in Ardour, or Aplay. The ADAT(1-3) sync lines also seem to follow
the state of the H-DSP correctly. The system also seems to be able to be
a sync master or slave.
So I started digging through hdsp.c, is it possible that
HDSP_DoubleSpeed is getting set incorrectly? I will try some tests later
and see if I can figure it out.
As stated previously, I do get an output, but it sounds garbled. It is
possible to make out some resemblance to the recorded audio, but it
sounds like it has passed through a really bad vocoder. So thats why I
am guessing it has something to do with sync speed.
Any pointers for where else to look would be greatly appreciated. Im no
code wizard, like most of the people on this list, but I try hard ;-)
On Tue, 2002-09-17 at 07:50, D R Holsbeck wrote:
> Ok so I got everything into a nice new rack, and quadruple checked my
> setup, and I still get a vocoder effect when trying ty play snything
> through my Digiface/cardbus interface.
>
> The Digiface works fine when connected to the pci interface, but not the
> cardbus interface. The modules, need the load/reload trick, to get jack
> to work with the pci or cardbus interfaces. So that seems nomal. I do
> get sound out when connected to the cardbus interface, but it sounds
> like it is being run through a very bad vocoder.
>
> I think somebody else has the same setup. H-DSP + cardbus, running. So
> Im pretty sure this should work.
>
> So if anybody has the magic incantations to make this work, I would be
> very appreciative of any words of wisdom they care to share ;-)
>
> System info
>
> Thinkpad A31 (P4 1.7g 256m ram)
> Alsa from cvs as of a month ago
> Debian 3.0 distro
>
>
> --
> drh_AT_niptron.com
>
> Great spirits have always encountered violent opposition from mediocre
> minds.
> -- Albert Einstein
>
> They laughed at Einstein. They laughed at the Wright Brothers. But
> they
> also laughed at Bozo the Clown.
> -- Carl Sagan
>
> _______________________________________________
> linux-audio-dev mailing list
> linux-audio-dev_AT_music.columbia.edu
> http://music.columbia.edu/mailman/listinfo/linux-audio-dev
>
-- drh_AT_niptron.comGreat spirits have always encountered violent opposition from mediocre minds. -- Albert Einstein
They laughed at Einstein. They laughed at the Wright Brothers. But they also laughed at Bozo the Clown. -- Carl Sagan
_______________________________________________ linux-audio-dev mailing list linux-audio-dev_AT_music.columbia.edu http://music.columbia.edu/mailman/listinfo/linux-audio-dev
This archive was generated by hypermail 2b28 : Thu Sep 19 2002 - 18:00:01 EEST