VAR-SOM-MX6 Audio record play: Difference between revisions
From Variscite Wiki
| Line 39: | Line 39: | ||
= Audio Playback = | = Audio Playback = | ||
<pre>$ amixer set PCM 125 | Set volume: | ||
<pre>$ amixer set PCM 125</pre> | |||
Play audio: | |||
<pre> | |||
$ aplay /usr/share/sounds/alsa/Front_Center.wav | $ aplay /usr/share/sounds/alsa/Front_Center.wav | ||
</pre> | </pre> | ||
| Line 55: | Line 58: | ||
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono | Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono | ||
</pre> | </pre> | ||
= Audio Record = | = Audio Record = | ||
<pre> | <pre> | ||
Revision as of 13:24, 16 December 2015
VAR-SOM-MX6 - Audio Record/Play
Get information on the Sound Cards
Installed devices:
root@var-som-mx6:~# cat /proc/asound/cards
0 [tlv320aic3xaudi]: tlv320aic3x-aud - tlv320aic3x-audio
tlv320aic3x-audio
1 [imxhdmisoc ]: imx-hdmi-soc - imx-hdmi-soc
imx-hdmi-soc
List device names:
root@var-som-mx6:~# aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=tlv320aic3xaudi
tlv320aic3x-audio,
Default Audio Device
sysdefault:CARD=imxhdmisoc
imx-hdmi-soc,
Default Audio Device
surround40:CARD=imxhdmisoc,DEV=0
imx-hdmi-soc,
4.0 Surround output to Front and Rear speakers
surround41:CARD=imxhdmisoc,DEV=0
imx-hdmi-soc,
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=imxhdmisoc,DEV=0
imx-hdmi-soc,
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=imxhdmisoc,DEV=0
imx-hdmi-soc,
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=imxhdmisoc,DEV=0
imx-hdmi-soc,
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
Audio Playback
Set volume:
$ amixer set PCM 125
Play audio:
$ aplay /usr/share/sounds/alsa/Front_Center.wav
Example:
root@var-som-mx6:~# amixer set PCM 125 Simple mixer control 'PCM',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 127 Mono: Front Left: Playback 125 [98%] [-1.00dB] Front Right: Playback 125 [98%] [-1.00dB] root@var-som-mx6:~# aplay /usr/share/sounds/alsa/Front_Center.wav Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
Audio Record
$ arecord -f cd -d 10 -D hw:0,0 test.wav $ aplay test.wav
Example:
root@var-som-mx6:~# arecord -f cd -d 10 -D hw:0,0 test.wav Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo root@var-som-mx6:~# ^C root@var-som-mx6:~# aplay test.wav Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo