Rock/audio

English

Sound on Linux

HDMI audio/ AV out audio

To test audio on Radxa Rock, you can run the following command:

   root@radxa:~# speaker-test -t wav -c 2
   speaker-test 1.0.25
   Playback device is default
   Stream parameters are 48000Hz, S16_LE, 2 channels
   WAV file(s)
   Rate set to 48000Hz (requested 48000Hz)
   Buffer size range from 48 to 32768
   Period size range from 16 to 3072
   Using max buffer size 32768
   Periods = 4
   was set period_size = 2979
   was set buffer_size = 32768
   0 - Front Left
   1 - Front Right
   Time per period = 2.061311

You can hear the audio from HDMI TV.

Squeezelite on rock with USB DAC

Working on getting squeezelite working with a USB DAC to play with Logitech Media Server. You need Logitech Media Server otherwise squeezelite is worthless without it. I have several instances of LMS around my house

Download Squeezelite AMRV6hf from here

   https://code.google.com/p/squeezelite/downloads/detail?name=squeezelite-armv6hf&can=2&q=

   sudo mv ./squeezelite-armv6hf /usr/bin/squeezelite

   sudo chmod ug+x /usr/bin/squeezelite

Plug Dac into USB and type

   squeezelite -l

It lists all sound devices. I typically use the "front" device. Then type.

   squeezelite -o front:CARD=DAC,DEV=0 -n ANYNAMEYOUWANT -s YOUR . SERVER . ADDRESS -a ::16:

i.e.

   squeezelite -o front:CARD=DAC,DEV=0 -n RadxaRock -s 10.0.1.99 -a ::16:

Unfortunately I can't get it working in 24 bit so far. I'm close with a few pops and clicks and hopefully can get it. And anybody that has any ideas I'm all ears.