On Fri, 11 Dec 2009, Peter Vrabec wrote: > Hi all, > > please can you help me. I can't play 24bit samples on ESI Juli@ thru optical > out. > > driver: snd_ice1724 > alsa version: I need to find out when I get home. But something in Fedora11. I > guess 1.0.21. > > $ aplay -D plughw:1,1 01.Desafinado.wav > Playing WAVE '01.Desafinado.wav' : Signed 24 bit Little Endian in 3bytes, > Rate 96000 Hz, Stereo > > $cat /proc/asound/card1/pcm1p/sub0/hw_params > access: MMAP_INTERLEAVED > format: S32_LE > subformat: STD > channels: 2 > rate: 96000 (96000/1) > period_size: 2048 > buffer_size: 8192 > > result: no sound > Note I didn't get any error/warning. > > same results with > speaker-test -c2 --device plughw:1,1 --rate 96000 --format S24_LE > > but I can hear some noise with: > speaker-test -c2 --device plughw:1,1 --rate 44100 --format S16_LE > speaker-test -c2 --device plughw:1,1 --rate 96000 --format S32_LE > I guess noise is expected (OK), isn't? > > My goal is to play bit perfect 16/44.1 and 24/96 via optical out into my DAC > Styleaudio Topaz. You hit probably two bugs. I was able to reproduce the speaker-test problem - the S24_LE format is not supported in this tool (so you got silence). This tool didn't check the supported formats. I added appropriate checks to the ALSA GIT repository: http://git.alsa-project.org/?p=alsa-utils.git;a=commitdiff;h=075becdb1ace743149eae9a32bc48f22d027092f Unfortunately, I don't know the reason, why aplay does not play your wav file. I have one S24_LE file here and it is played on 96kHz/24-bit hardware without problems. Could I download your .wav file somewhere for tests? Or you may try to test another player. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
