On 09/11/2009 01:36 PM, Clemens Ladisch wrote: > Piotr Sipika wrote: >> On 09/11/2009 03:22 AM, Clemens Ladisch wrote: >>>> rate 8000 >>> >>> This looks like a device that uses 8-bit samples. >>> What is the output of "aplay -D playback_vol_channel1 something.wav"? >> >> I think rate corresponds to the number of samples per second. >> The size of the sample (bits-per-sample) is set by the format, which in >> my case is set to SND_FORMAT_S16_LE (16-bit signed int). > > I see devices with 8 kHz typically as headsets that want U8. Now that I think about it, that would make more sense than using 16-bit samples... > Sorry, I forgot the -v. > Please try "aplay -v -Dplay_channel1 stereo-int16.wav". > aplay -v -Dplay_channel1 stereo-int16.wav Playing WAVE 'stereo-int16.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Stereo Plug PCM: Route conversion PCM (sformat=S16_LE) Transformation table: 0 <- 0 1 <- none Its setup is: stream : PLAYBACK access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 8000 exact rate : 8000 (8000/1) msbits : 16 buffer_size : 4096 period_size : 512 period_time : 64000 tstamp_mode : NONE period_step : 1 avail_min : 512 period_event : 0 start_threshold : 4096 stop_threshold : 4096 silence_threshold: 0 silence_size : 0 boundary : 1073741824 Slave: Copy conversion PCM Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 8000 exact rate : 8000 (8000/1) msbits : 16 buffer_size : 4096 period_size : 512 period_time : 64000 tstamp_mode : NONE period_step : 1 avail_min : 512 period_event : 0 start_threshold : 4096 stop_threshold : 4096 silence_threshold: 0 silence_size : 0 boundary : 1073741824 Slave: Direct Stream Mixing PCM Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 8000 exact rate : 8000 (8000/1) msbits : 16 buffer_size : 4096 period_size : 512 period_time : 64000 tstamp_mode : NONE period_step : 1 avail_min : 512 period_event : 0 start_threshold : 4096 stop_threshold : 4096 silence_threshold: 0 silence_size : 0 boundary : 1073741824 Hardware PCM card 0 'gw_avila-board_0' device 0 subdevice 0 Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 8000 exact rate : 8000 (8000/1) msbits : 16 buffer_size : 8192 period_size : 512 period_time : 64000 tstamp_mode : ENABLE period_step : 1 avail_min : 512 period_event : 0 start_threshold : 1 stop_threshold : 1073741824 silence_threshold: 0 silence_size : 1073741824 boundary : 1073741824 ^CAborted by signal Interrupt... Thanks, Piotr ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user