Re: [Alsa-user] Distortion via SPDIF

2007-12-21 Thread Brian L Scipioni
Well, that's working correctly then. (Sometimes you have to change modes to make the receiver re-synch) On Wed, 2007-12-19 at 22:02 +1030, Tom Lanyon wrote: > On 19/12/2007, at 9:41 PM, Brian L Scipioni wrote: > > > Is your receiver's DTS indicator light still lit after you decode with > > MPlay

Re: [Alsa-user] Distortion via SPDIF

2007-12-20 Thread Tom Lanyon
On 20/12/2007, at 2:35 AM, Jeremy Mordkoff wrote: >> I haven't reset/resync'd the receiver at all, but when I switch to >> decoded audio the receiver displays 'PCM' instead of 'DTS', so it is >> detecting the change. > > I would not be surprised if 'DTS' means AC3 and 'PCM' means anything > else (

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Jeremy Mordkoff
> > I haven't reset/resync'd the receiver at all, but when I switch to > decoded audio the receiver displays 'PCM' instead of 'DTS', so it is > detecting the change. I would not be surprised if 'DTS' means AC3 and 'PCM' means anything else (isn't PCM headerless?). Is mplayer transcoding to PCM?

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Jeremy Mordkoff
> Interestingly, when I use mplayer to decode my DTS test file and play > via SPDIF, it comes out distorted. If I tell mplayer to use DTS > passthrough on the same file, it sounds perfect. What is mplayer transcoding/decoding the audio to? Is it still trying to use the HW decoder to play a file th

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Paolo Saggese
On Wednesday 19 December 2007 12:03, you wrote: > I tried using 'plughw' but mplayer tells me it can't find the plughw > lib: > [AO_ALSA] alsa-lib: pcm.c:2105:(snd_pcm_open_conf) Cannot open shared > library /usr/lib64/alsa-lib/libasound_module_pcm_plughw.so mmmh... do you have a 64bit

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Tom Lanyon
On 19/12/2007, at 9:41 PM, Brian L Scipioni wrote: > Is your receiver's DTS indicator light still lit after you decode with > MPlayer? > > Do you reset (re-synch) your receiver after changing the format coming > across your SPDIF? I haven't reset/resync'd the receiver at all, but when I switch t

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Brian L Scipioni
Is your receiver's DTS indicator light still lit after you decode with MPlayer? Do you reset (re-synch) your receiver after changing the format coming across your SPDIF? On Wed, 2007-12-19 at 11:34 +0100, Paolo Saggese wrote: > On Wednesday 19 December 2007 03:00, Tom Lanyon wrote: > > > Inter

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Tom Lanyon
On 19/12/2007, at 9:04 PM, Paolo Saggese wrote: > that's really strange... :-/ > > mmh... not really. :-( > > The only other things that I may suggest is to try playing > trough different devices, i.e. try hw and plughw, as well > as to try using "iecset" to see what's your card settings. > > Perha

Re: [Alsa-user] Distortion via SPDIF

2007-12-19 Thread Paolo Saggese
On Wednesday 19 December 2007 03:00, Tom Lanyon wrote: > Interestingly, when I use mplayer to decode my DTS test file and play > via SPDIF, it comes out distorted. If I tell mplayer to use DTS > passthrough on the same file, it sounds perfect. > > I tested playing the same files as decoded PC

Re: [Alsa-user] Distortion via SPDIF

2007-12-18 Thread Tom Lanyon
On 18/12/2007, at 9:52 PM, Paolo Saggese wrote: > may be you're having sample-rate mismatch problems? > > DTS/AC3 streams are usually 48KHz/24bit, while FLAC are most > often 44.1KHz/16bit (CDDA). > > Perhaps your card is set for (or may do only) S/PDIF out at > 48KHz, and you are trying to play a

Re: [Alsa-user] Distortion via SPDIF

2007-12-18 Thread Paolo Saggese
On Tuesday 18 December 2007 02:02, Tom Lanyon wrote: > > cable. I can play audio files using DTS and AC3 passthrough direct to > > the receiver without issue. However, playing non encoded audio (MP3s, > > FLAC audio, etc) is distorted through all volume levels. It also [...] > A quick follow up to

Re: [Alsa-user] Distortion via SPDIF

2007-12-17 Thread Tom Lanyon
On 18/12/2007, at 10:12 AM, Tom Lanyon wrote: > Greetings list, > > I've just setup a new PC with an AD 1988B sound chip on the > motherboard; it's hooked into my home theatre using an optical spdif > cable. I can play audio files using DTS and AC3 passthrough direct to > the receiver without issu

[Alsa-user] Distortion via SPDIF

2007-12-17 Thread Tom Lanyon
Greetings list, I've just setup a new PC with an AD 1988B sound chip on the motherboard; it's hooked into my home theatre using an optical spdif cable. I can play audio files using DTS and AC3 passthrough direct to the receiver without issue. However, playing non encoded audio (MP3s, FLAC