Hi there - I'm fairly new to ALSA & Linux sound in general, and was wondering if someone could help me out with an issue. Basically, the sound on my embedded device is very noisy (you cannot make out speech, but you can make out the "general rhythm" as it were), and I think the issue is to do with sample formats. The sample I'm trying to play is a stereo signed 16 bit little endian sample, e.g: $ file bugs.wav bugs.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 48000 Hz But when I try and play it, it seems to want to play it in signed [b]8 bit[/b] format - even if I try and enforce signed 16 bit format with --format=S16_LE: $ aplay -v --format=S16_LE bugs.wav Playing WAVE 'bugs.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo Plug PCM: Copy conversion PCM Its setup is: stream : PLAYBACK access : RW_INTERLEAVED format : S8 subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 24000 period_size : 6000 period_time : 125000 tstamp_mode : NONE period_step : 1 avail_min : 6000 period_event : 0 start_threshold : 24000 stop_threshold : 24000 silence_threshold: 0 silence_size : 0 boundary : 1572864000 Slave: Hardware PCM card 0 'UCB1400' device 0 subdevice 0 Its setup is: stream : PLAYBACK access : MMAP_INTERLEAVED format : S8 subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 24000 period_size : 6000 period_time : 125000 tstamp_mode : NONE period_step : 1 avail_min : 6000 period_event : 0 start_threshold : 24000 stop_threshold : 24000 silence_threshold: 0 silence_size : 0 boundary : 1572864000 appl_ptr : 0 hw_ptr : 0 Any ideas where to start looking for/solving this problem? Any help appreciated! John G ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
