VAR-SOM-MX6 Audio record play: Difference between revisions
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{{PageHeader|VAR-SOM-MX6 - Audio Record/Play}} {{DocImage|category1=VAR-SOM-MX6|category2=Yocto}} __toc__ | {{PageHeader|VAR-SOM-MX6 - Audio Record/Play}} {{DocImage|category1=VAR-SOM-MX6|category2=Yocto}} __toc__ | ||
= Get information on the Sound Cards = | = Get information on the Sound Cards = | ||
Installed devices: | |||
<pre> | <pre> | ||
root@var-som-mx6:~# cat /proc/asound/cards | root@var-som-mx6:~# cat /proc/asound/cards | ||
0 [tlv320aic3xaudi]: tlv320aic3x-aud - tlv320aic3x-audio | 0 [tlv320aic3xaudi]: tlv320aic3x-aud - tlv320aic3x-audio | ||
Revision as of 13:22, 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
$ amixer set PCM 125 $ 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