Am Mittwoch, 29. Oktober 2003 12:18 schrieben Sie: > It seems that ALSA has problems with asynchronous output endpoints. > The Audiophile doesn't use those for higher sample rates; so what > happens when you play the file at 48001 Hz (_LE or _BE)? > I must say I do have difficulties to check that, I converted a wav to S32_LE 96000 and let it play with the plughw device (the soundcard seems to only accepts S24_3LE and I have no prog in the moment handy creating such a type)
This I must say was...well not very helpfull since it played complete static when I played it as S32_LE. With S32_BE it sounded exactly the same as when I play the normal one with S16_LE. (So it seems that at least that problem is not apperent when in an adaptive endpoint...) But still there seems to be some kind of problem problem... The ouput is (just for information) ----------- $aplay -D plughw:1 -f S32_LE -r 96000 -c 2 -t raw t9.raw -v Playing raw data 't9.raw' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo Plug PCM: Linear conversion PCM (S24_3LE) Its setup is: stream : PLAYBACK access : RW_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 96000 exact rate : 96000 (96000/1) msbits : 32 buffer_size : 10922 period_size : 2730 period_time : 28437 tick_time : 1000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 2730 xfer_align : 2730 start_threshold : 10920 stop_threshold : 10922 silence_threshold: 0 silence_size : 0 boundary : 1431568384 Slave: Hardware PCM card 1 'Audiophile USB (tm)' device 0 subdevice 0 Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S24_3LE subformat : STD channels : 2 rate : 96000 exact rate : 96000 (96000/1) msbits : 24 buffer_size : 10922 period_size : 2730 period_time : 28437 tick_time : 1000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 2730 xfer_align : 2730 start_threshold : 10920 stop_threshold : 10922 silence_threshold: 0 silence_size : 0 boundary : 1431568384 --------- I am going to play a little with this later, by the way, the same (static) happenes when I play it in 48000 S32_LE on the plughw, thereby using the other adaptive endpoint.. ---------- $aplay -D plughw:1 -f S32_LE -r 48000 -c 2 -t raw t9.raw -v Playing raw data 't9.raw' : Signed 32 bit Little Endian, Rate 48000 Hz, Stereo Plug PCM: Linear conversion PCM (S24_3LE) Its setup is: stream : PLAYBACK access : RW_INTERLEAVED format : S32_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 32 buffer_size : 10922 period_size : 2730 period_time : 56875 tick_time : 1000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 2730 xfer_align : 2730 start_threshold : 10920 stop_threshold : 10922 silence_threshold: 0 silence_size : 0 boundary : 1431568384 Slave: Hardware PCM card 1 'Audiophile USB (tm)' device 0 subdevice 0 Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S24_3LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 24 buffer_size : 10922 period_size : 2730 period_time : 56875 tick_time : 1000 tstamp_mode : NONE period_step : 1 sleep_min : 0 avail_min : 2730 xfer_align : 2730 start_threshold : 10920 stop_threshold : 10922 silence_threshold: 0 silence_size : 0 boundary : 1431568384 --------- Any Ideas or further tests I can do? Sincerely Jan Krämer ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
