> > Hello, > > I'm not entirely sure about if pulseaudio is the culprit here, but I'm out of ideas and need some advise. > > Connecting _the_same_usb _sound_card_ to my laptop or to the raspberry makes pulseaudio detect different rate capabilities. Unfortunatelly the raspberry detects the wrong rate (48000) so it forces samplerate conversion for 44100 streams. It doesn't matter the parameter that I change (default-sample-rate, rate=), pulseaudio always detect the wrong rate. > > Other applications on raspberry like mpd (alsa output) have not problem using 44100. > > Linux macbook 3.17.1-gentoo-r1-macbook4,1 #1 SMP PREEMPT Fri Oct 17 17:29:07 CEST 2014 x86_64 Intel(R) Core(TM)2 Duo CPU T8300 @ 2.40GHz GenuineIntel GNU/Linux > [...] > I: [pulseaudio] sink.c: Created sink 1 "alsa_output.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00-CODEC.analog-stereo" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right > > > Linux rpi 3.12.29+ #714 PREEMPT Wed Oct 1 23:11:38 BST 2014 armv6l GNU/Linux > [...] > I: [pulseaudio] sink.c: Created sink 0 "alsa_output.usb-Burr-Brown_from_TI_USB_Audio_CODEC-00-CODEC.analog-stereo" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right > > > any clue where can be the problem? Post the output of lsusb -vvvv You can find the supported rates in those usb descriptors of your usb audio