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USB sound in Ubuntu - automatically selecting a USB audio ...
https://blog.ostermiller.org/ubuntu-usb-audio/#:~:text=Make%20the%20script%20executable%20sudo%20chmod%20a%2Brx%20%2Fopt%2Fusb-audio-select.sh,the%20udev%20system%2C%20and%20install%20the%20pm-utils%20script.
linux - How to play audio via a USB sound card using c++ ...
https://stackoverflow.com/questions/44395231/how-to-play-audio-via-a-usb-sound-card-using-c-libao-alsa-on-raspberry-pi
1.3) Change audio levels/setting using alsamixer utility $alsamixer 1.4) Command to record audio $arecord -D plughw:1 -f S16_LE -r 48000 -d 5 ./testSound.wav 1.5) Command to play recorded audio $aplay --device=plughw:1,0 ./testSound.wav
linux - How I can play any audiofile to any connected usb ...
https://stackoverflow.com/questions/43806447/how-i-can-play-any-audiofile-to-any-connected-usb-audio-card
This command: $ mplayer -af channels=2:2:0:0:1:0 song1.mp3. will play sound on left speaker. 2 (the count of output channels) : 2 (the count of moving signal) : 0:0 (left channel route to left channel) 1:0 (right channel route to left channel) To route sound to any audiocard you should use this command:
USB Audio Support - Linux USB
http://www.linux-usb.org/USB-guide/x319.html
USB audio systems such as speakers normally comply with the USB audio class specification. If your audio device does not comply with the specification, it will not work with Linux at this time. You need to turn on the Sound card support kernel option, which is in the Sound section. You will then be able to turn on the USB Audio support option in the normal USB section.
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