2010/2/17 Lennart Poettering <mznyfn@xxxxxxxxxxx> > On Wed, 17.02.10 11:30, Raymond Yau (superquad.vortex2@xxxxxxxxx) wrote: > > > > > 2010/2/16 Lennart Poettering <mznyfn@xxxxxxxxxxx> > > > > > On Tue, 16.02.10 09:08, Clemens Ladisch (clemens@xxxxxxxxxx) wrote: > > > > > > > > > > > > if the program use a format FLOAT_LE which is not supported by the > hardware > > and need to use plughw , you have already added error ( resampling and > > format conversion ) to the result > > That numeric noise is neglible in contrast to the big (20dB or so?) > discrepancy I am seeing here. > > Lennart > For HDA , some codec can playback/record in 16 , 20, 24 or 32 bits , if you are using non-native format , I think there should be some practical difference when HDA codec use 16 , 24, or 32 bits for running your test _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
