Differences

This shows you the differences between two versions of the page.

--- en:general_information:tutorial:audio [2015/11/30 15:58] – created liedmann
+++ en:general_information:tutorial:audio [2022/08/04 15:02] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
-===== Audio =====
+====== Audio ======
-==== TQMa335x ====
-=== TQMa335x ===
+<WRAP round important 50%>
+Please see supported features list of your TQ module to verify that audio playback / recording is supported by the Board Support Package
+</WRAP>
+==== Audio playback ====
+The latest BSP revisions are preconfigured for audio playback, when audio is supported.
+Playback:
+<code>
+aplay testfile.wav
+</code>
+++++ example |
+<code>
+root@MBa6x:~ aplay testfile.wav
+  Playing WAVE 'testfile' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
+</code>
+++++
+==== Audio recording ====
+In order to start audio recording via the Line In connector the following alsamixer settings have to be applied :
+<code>
+amixer set 'Right Input Mixer IN1_R P' unmute
+amixer set 'Left Input Mixer IN1_L P' unmute
+amixer set 'ADCFGA Right Mute' mute
+amixer set 'ADCFGA Left Mute' mute
+mount -o remount,rw /
+</code>
+Recording:
+<code>
+arecord -f cd testfile.wav
+</code>
+++++ example |
+<code>
+root@MBa6x:~ arecord -f cd testfile.wav
+  Recording WAVE 'testfile' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
+</code>
+++++