The plughw part is what makese it resample to 16-bit. You should just use hw.
On Mon, Feb 9, 2009 at 10:29 PM, Demian Martin <demianm_1@xxxxxxxxx> wrote:> Pavel:> Thanks for all your help and work on this project.>> I'm using the Juli@ card because it supports 176.4KHz. The only other> candidates are much more expensive and bring their own problems.>> I'm using Xine set for dolby/dts passthrough which seems to send the audio> data at its native rate. The resampling is bypassed (Dolby Digital would be> trashed otherwise).>> I will try playing the files from the command line when I am next in front> of the system, tomorrow.>> This is the Asound.conf:> Asound.conf (/etc)>> pcm.asym_spdif {>> type asym>> playback.pcm "plughw:0,1">> capture.pcm "plughw:0">> }>>> pcm.!default asym_spdif>> Demian Martin> PDS>>> -----Original Message----->> From: Pavel Hofman [mailto:pavel.hofman@xxxxxxxxx]>> Sent: Monday, February 09, 2009 12:27 PM>> To: Demian Martin>> Cc: alsa-devel@xxxxxxxxxxxxxxxx; pavel.hofman@xxxxxxxxx>> Subject: Re: Juli@ ICE1724 and 24 bit audio>>>> Demian Martin napsal(a):>> > I have the driver working fine for sample rates from 44.1K to 196K>> however>> > it seems to be truncating the data to 16 bits. I wasn't sure until I>> started>> > testing with the HRx 176.4K 24 bit files that have an embedded HDCD flag>> in>> > the LSB. The files work OK on Windoze systems (with a lot of low level>> > settings tweaked) and they play fine but the flag isn't detected by a>> system>> > that can detect them. Further looking at the data stream with a scope it>> > seems the last 8 bits aren't changing. Is there anything I can do to>> control>> > the driver to confirm this problem or change the playback settings to>> make>> > it work?>> >>> >>>>> How do you play the files? Do you use the hw or plug:hw device? IIRC,>> the standard-setup dmix resampler is 16-bit only.>>>> I did tests with SPDIF OUT/IN and found it bit-perfect, for 24bit too.>>>> Regular ICE1724 cards do not output 176.4kHz SPDIF, only 88.2kHz. But>> Juli is not affected by that bug.>>>> Regards,>>>>>> Pavel.>> _______________________________________________> Alsa-devel mailing list> Alsa-devel@xxxxxxxxxxxxxxxx> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel>
-- Vedran Miletić_______________________________________________Alsa-devel mailing listAlsa-devel@xxxxxxxxxxxxxxxxxxxx://mailman.alsa-project.org/mailman/listinfo/alsa-devel
