I'm trying to make ALSA 1.0.23 to use different resampling algorithm. I did some research on the Internet and found that putting the line defaults.pcm.rate_converter <library> into either /etc/asound.conf or ~/.asoundrc will tell ALSA to use different resampling algorithm.However, it doesn't seem to work. Putting the following line into ~/.asoundrc defaults.pcm.rate_converter speexrate_best doesn't have any effect on either CPU usage or the list of loaded libraries (doing lsof -n | grep speex while playing something yields nothing). Although, the following snippet forces ALSA to use new resampling algorithm:pcm.!default {    type rate    slave {        pcm hw:0,0        rate 48000    }    converter speexrate_best}Doing so makes CPU usage to 10-15% and makes two new shared libraries appear in the list of lsof, but software mixing stops working and I can't play multiple audio files.I'm probably missing something obvious, but I'm complete noob. What can be an issue here?
Trying to improve sound quality with ALSA
alsa
Looks like mplayer was doing resampling all the way long. Playing some wav files with aplay shows that the new resampling algorithm is being used as intended.