At Tue, 22 Jul 2003 09:53:41 -0400, J. Scott Merritt <[EMAIL PROTECTED]> wrote: > > On Tue, 22 Jul 2003 14:27:23 +0200 > Takashi Iwai <[EMAIL PROTECTED]> wrote: > > > > > > > > S24_LE is not supported. > > > Try S24_3LE. It's the 24 bit format coded on 3 bytes > > > > yep. and you can record with S24_LE by converting via plughw plugin, > > such as > > % arecord -Dplughw:1,0 -fS24_LE -c2 -r48000 foo.wav > > > > Thank you - much appreciated ! > > A further clarification: My intel i810 is located at hw:0 and appears > to support 20 bit sampling.
it's not supported on ALSA driver, sorry. >If I record via the plughw plugin, eg: > arecord -Dplughw:0,0 -fS24_LE ... > > will it sample at the full 20 bits and then convert to 24 bit format ? in theory, yes. (20bit format on ICH is represented anyway as 24bit, so it IS 24bit format :) > How does one know/determine what native sample resolution is actually > being used ? (e.g. How do I know that it is not simply sampling at > S16_LE and the plughw plugin is "expanding" it to S24_LE) ? you can see the detail with -v option. (-vv shows levels, too). also, /proc/asound/card*/pcm0p/sub0/hw_params shows the current hardware setting for the pcm stream (during the operation). ciao, Takashi ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 _______________________________________________ Alsa-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-user
