At Thu, 27 Mar 2008 01:58:50 +0100, Rene Herman wrote: > > On 26-03-08 23:57, Bill Unruh wrote: > > > On Wed, 26 Mar 2008, Helge Fredriksen wrote: > > > >> Ok, here's what I found out: > >> > >> Since these cards seem to lack the support for doing frequency conversion in > >> HW, you simply need to use the alsa plugin > >> plughw instead of hw when referring to the card: > >> > >> arecord -Dplughw:0 test.wav > >> aplay -Dplughw:0 test.wav > > > > AFAIK, alsa frequency conversion is pretty primative ( linear > > interpolation) which produces a huge amount of noise/distortion. > > The default is, but if you install the alsa-plugins package (and > libsamplerate) and add a line > > defaults.pcm.rate_converter "samplerate" Or "speexrate". This is usually much faster. Takashi ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
