From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: usbaudio won't do 24-bit or 32-bit i/o, and won't do 96000 frames per second
Date: Fri, 13 Dec 2002 19:19:07 +0100
Sender: alsa-devel-admin@lists.sourceforge.net
Message-ID: <s5hd6o5u6hw.wl@alsa2.suse.de>
References: <Pine.HPX.4.33n.0212051549290.19058-100000@studcom.urz.uni-halle.de>
	<3DF0482E.8010109@boosthardware.com>
Mime-Version: 1.0 (generated by SEMI 1.14.4 - "Hosorogi")
Content-Type: text/plain; charset=US-ASCII
Return-path: <alsa-devel-admin@lists.sourceforge.net>
In-Reply-To: <3DF0482E.8010109@boosthardware.com>
Errors-To: alsa-devel-admin@lists.sourceforge.net
List-Help: <mailto:alsa-devel-request@lists.sourceforge.net?subject=help>
List-Post: <mailto:alsa-devel@lists.sourceforge.net>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@lists.sourceforge.net?subject=subscribe>
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/alsa-devel>,
	<mailto:alsa-devel-request@lists.sourceforge.net?subject=unsubscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum=alsa-devel>
To: Patrick Shirkey <pshirkey@boosthardware.com>
Cc: Clemens Ladisch <clemens@ladisch.de>, "John S. Denker" <jsd@monmouth.com>, alsa-devel@lists.sourceforge.net
List-Id: alsa-devel@alsa-project.org

Hi Patrick,

At Fri, 06 Dec 2002 15:48:14 +0900,
Patrick Shirkey wrote:
> 
> Clemens Ladisch wrote:
> > John S. Denker wrote:
> > 
> >>Request #1: USB driver supporting 24-bit i/o.
> >>Request #2: USB driver supporting 96000 frames per second.
> > 
> > 
> > What you want is already supported by the snd-usb-audio driver. IIRC
> > Patrick Shirkey reported that 24bit@96kHz works with the M-Audio Quattro.
> > 
> 
> Actually I have just yesterday noticed a specific problem with the 24 
> bit support.
> 
> Also you should know that the quattro only supports 24_3le which is 24 
> bits, three bytes. This is contrary to possibly all other pro devices 
> which support 24bits, four bytes or something like that. Meaning that 
> you have to use a special bit depth just for the quattro. This could be 
> the problem you are seeing.
> 
> Currently I am using the cvs from the 18 November. I will update and 
> check again. I have initialised both pcms and I cannot record a signal 
> through the first pcm hw:1,0 although arecord doesn't complain.

could you tell me the rcs version numbers of the files on
alsa-kernel/usb you are using (18 Nov.) ?  i've checked the files via
cvs but i couldn't see any differences around the date.


Takashi


-------------------------------------------------------
This sf.net email is sponsored by:
With Great Power, Comes Great Responsibility 
Learn to use your power at OSDN's High Performance Computing Channel
http://hpc.devchannel.org/