On Wed, 2007-01-10 at 10:27 -0500, Jean Piché wrote: > > > Significantly more info than was previsouly availlable: > > > http://alsa.opensrc.org/Dmix > > > from the page: > > > "For ALSA 1.0.9rc2 and higher you don't need to setup dmix. Dmix is > enabled as default for soundcards which don't support hw mixing." > > > A caveat from the same page: > > > "Also, you should keep in mind, that software mixing is possible only, > if all signals are at the same sample rate. So, if you want to play > DVD's, which use 48kHz sample rate for audio, with this kind of plug, > everything will be downsampled to 44.1kHz. Unfortunatelly it does'nt > work wery well (there are some syncronization problems with some > players). In this case you have two opportunities, either use a > separate plug (and loose ability to playback mp3 and dvd on the same > time) or tell your DVD player to sample audio down to 44.1khz, for > example:
I remember reading that; and I didn't quite understand what they were getting at. Does that mean that dmix itself doesn't up/down sample? Or does it mean that dmix _does_ in fact up/down sample, but that applications that aren't expecting to be up/down sampled might have problems? Can we just start shoving a variety of sounds at various sample rates through from different programs and expect dmix to just do the right thing, even if it does upsample everything to 44k. Dan _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
