[alsa-devel] Default Sample rate Conversion

Prabhu Sivaraja prabhu.sivaraja at gmail.com
Wed May 23 06:40:43 CEST 2007

Does ALSA automatically convert to my devices sample rate?
My alsa.conf file is below

 pcm.mix {
        type dmix
        ipc_key 1024
        slave {
         pcm "hw:0,0"
         rate 48000
    pcm.!default {
        type plug
        slave.pcm "mix"

When I play a 32KHz file with aplay does it get up sampled to my device's
48KHz sample rate? I am assuming it does as it plays just fine but I am not
sure where the upsampling happens?


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