10.19 Audio Speakers Test
$ aplay -L
default
Playback/recording through the PulseAudio sound server
[...]
sysdefault:CARD=USB
ThinkPad Thunderbolt 3 Dock USB, USB Audio
Default Audio Device
front:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
Front speakers
surround21:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
4.0 Surround output to Front and Rear speakers
surround41:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=USB,DEV=0
ThinkPad Thunderbolt 3 Dock USB, USB Audio
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
[...]$ speaker-test -t wav -c 6
speaker-test 1.2.2
Playback device is default
Stream parameters are 48000Hz, S16_LE, 6 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 32 to 349525
Period size range from 10 to 116509
Using max buffer size 349524
Periods = 4
was set period_size = 87381
was set buffer_size = 349524
0 - Front Left
4 - Centre
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
Time per period = 8.736032Your donation will support ongoing availability and give you access to the PDF version of this book. Desktop Survival Guides include Data Science, GNU/Linux, and MLHub. Books available on Amazon include Data Mining with Rattle and Essentials of Data Science. Popular open source software includes rattle, wajig, and mlhub. Hosted by Togaware, a pioneer of free and open source software since 1984. Copyright © 1995-2022 Graham.Williams@togaware.com Creative Commons Attribution-ShareAlike 4.0
