[Alsa-user] Missing input low-pass filter

[Christian J. <ch...@gm...>]

Hello

I've got problems with microphone input quality at low sample rates:
it clearly seems to be missing low-pass filtering of the input signal
before sampling. For more details see the Ekiga mailing list thread at
http://mail.gnome.org/archives/ekiga-list/2010-March/msg00007.html

Is this just an ALSA configuration issue (bad config, or, could it be
remedied was a workaround with a special configuration?), a driver
issue, or broken hardware that ALSA is never supposed to fix?

Thanks,
Christian.