Changes between Version 1 and Version 2 of Docs/825gen2/Dev/Devices/Audio

Timestamp:

01/18/24 11:45:21 (22 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Devices/Audio

@@ -1 +1 @@
 = Audio =
+
+The 825 has an audio line out port. This is allows high quality stereo audio output. This is independent from the beeper.
+
+The command line utility aplay may be used to play wav files to the audio output, for example:
+(For this example audio files are placed on a flash drive in directory wav_files auto mounted as /run/media/sda1)
+
+{{{
+# aplay /run/media/sda1/wav_files/BOUNCEIN.WAV
+Playing WAVE '/run/media/sda1/wav_files/BOUNCEIN.WAV' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
+# aplay /run/media/sda1/wav_files/BOING.WAV
+Playing WAVE '/run/media/sda1/wav_files/BOING.WAV' : Signed 16 bit Little Endian, Rate 22025 Hz, Mono
+# aplay /run/media/sda1/wav_files/BOUNCE.WAV
+Playing WAVE '/run/media/sda1/wav_files/BOUNCE.WAV' : Signed 16 bit Little Endian, Rate 22025 Hz, Mono
+# aplay /run/media/sda1/wav_files/HAPPY.WAV
+Playing WAVE '/run/media/sda1/wav_files/HAPPY.WAV' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
+# aplay /run/media/sda1/wav_files/MELT.WAV
+Playing WAVE '/run/media/sda1/wav_files/MELT.WAV' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
+#
+}}}
+
+Gstreamer may be used to play an mp3 audio file:
+
+{{{
+root@imx8mq-var-dart:/run/media/Data-sda1# gst-launch-1.0 playbin uri=file:///run/media/Data-sda1/sample-12s.mp3
+}}}