Sorry, please, ignore - it's /usr/share/alsa/alsa.conf Andrew On Thu, Nov 15, 2012 at 05:46:17PM -0300, Andrew Cooke wrote: > > Why does ALSA upsample to 48kHz when playing a 44.1kHz wav with a device > capable of 44.1kHz? How do I understand what is happening? Where is the > configuration (OpenSuse 12.2 with no asoundrc or similar)? Where is the > documentation? > > Evidence below, Andrew > > > cat /proc/asound/D1/stream0 > 2010 REV 1.7 Audioengine D1 at usb-0000:00:12.2-3.2.4.1, > full : USB Audio > > Playback: > Status: Running > Interface = 1 > Altset = 2 > URBs = 3 [ 8 8 8 ] > Packet Size = 600 > Momentary freq = 48000 Hz (0x30.0000) > Feedback Format = 10.14 > Interface 1 > Altset 1 > Format: S24_3LE > Channels: 2 > Endpoint: 1 OUT (ASYNC) > Rates: 96000, 88200, 48000, 44100, 32000 > Interface 1 > Altset 2 > Format: S16_LE > Channels: 2 > Endpoint: 1 OUT (ASYNC) > Rates: 96000, 88200, 48000, 44100, 32000 > > > Playing WAVE '/crypto/music/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Mono > Plug PCM: Rate conversion PCM (48000, sformat=S16_LE) > Converter: libspeex (builtin) > Protocol version: 10002 > Its setup is: > stream : PLAYBACK > access : RW_INTERLEAVED > format : S16_LE > subformat : STD > channels : 1 > rate : 44100 > exact rate : 44100 (44100/1) > msbits : 16 > buffer_size : 15052 > period_size : 940 > period_time : 21333 > tstamp_mode : NONE > period_step : 1 > avail_min : 940 > period_event : 0 > start_threshold : 15052 > stop_threshold : 15052 > silence_threshold: 0 > silence_size : 0 > boundary : 4236761349448794112 > Slave: Route conversion PCM (sformat=S16_LE) > Transformation table: > 0 <- 0 > 1 <- 0 > Its setup is: > stream : PLAYBACK > access : MMAP_INTERLEAVED > format : S16_LE > subformat : STD > channels : 1 > rate : 48000 > exact rate : 48000 (48000/1) > msbits : 16 > buffer_size : 16384 > period_size : 1024 > period_time : 21333 > tstamp_mode : NONE > period_step : 1 > avail_min : 1024 > period_event : 0 > start_threshold : 16384 > stop_threshold : 16384 > silence_threshold: 0 > silence_size : 0 > boundary : 4611686018427387904 > Slave: Direct Stream Mixing PCM > Its setup is: > stream : PLAYBACK > access : MMAP_INTERLEAVED > format : S16_LE > subformat : STD > channels : 2 > rate : 48000 > exact rate : 48000 (48000/1) > msbits : 16 > buffer_size : 16384 > period_size : 1024 > period_time : 21333 > tstamp_mode : NONE > period_step : 1 > avail_min : 1024 > period_event : 0 > start_threshold : 16384 > stop_threshold : 16384 > silence_threshold: 0 > silence_size : 0 > boundary : 4611686018427387904 > Hardware PCM card 2 'Audioengine D1' device 0 subdevice 0 > Its setup is: > stream : PLAYBACK > access : MMAP_INTERLEAVED > format : S16_LE > subformat : STD > channels : 2 > rate : 48000 > exact rate : 48000 (48000/1) > msbits : 16 > buffer_size : 16384 > period_size : 1024 > period_time : 21333 > tstamp_mode : ENABLE > period_step : 1 > avail_min : 1024 > period_event : 0 > start_threshold : 1 > stop_threshold : 4611686018427387904 > silence_threshold: 0 > silence_size : 4611686018427387904 > boundary : 4611686018427387904 > appl_ptr : 0 > hw_ptr : 0 > ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
