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Using a USB Audio Device With a Raspberry Pi
https://computers.tutsplus.com/articles/using-a-usb-audio-device-with-a-raspberry-pi--mac-55876
# options snd-usb-audio index=-2 Simply commenting out the line will allow the USB audio device to be the primary method of output. Step 5. Press Ctrl Z and save the changes, then restart your Raspberry Pi by entering: $ sudo reboot Step 6. With the Raspberry Pi restarted, re-run the following command: $ amixer
Using a USB Audio Device with the Raspberry Pi
https://www.raspberrypi-spy.co.uk/2019/06/using-a-usb-audio-device-with-the-raspberry-pi/
Set USB Audio as Default Audio Device. The USB sound device can be made the default audio device by editing a system file “alsa.conf” : sudo nano /usr/share/alsa/alsa.conf. Scroll and find the following two lines: defaults.ctl.card 0 defaults.pcm.card 0. Change the 0 to a 1 to match the card number of the USB device :
Audio Out Through USB - Raspberry Pi Forums
https://forums.raspberrypi.com/viewtopic.php?t=40023
Setup is currently: Pi Model B. USB Slot 1: Plugable USB 2.0 7 Port Hub (which it is also powered by) USB Slot 2: Airlink 101 WiFi Dongle. 7 Port Hub. USB Slot 1: RPi. USB Slot 2: Focusrite Scarlett 2i2. USB Slots 3 - 7: Empty. Focusrite Scarlett 2i2 is running out through a 1/4" - 1/8" adapter and then to my speakers.
Configure Raspberry pi with USB Audio · GitHub
https://gist.github.com/rnagarajanmca/63badce0fe0e2ad126041c7c139970ea
If the file is not available create one and put the following lines to reorder the audio devices. # This sets the index value of the cards but doesn't reorder. options snd_usb_audio index=0 options snd_bcm2835 index=1 # Does the reordering. options snd slots=snd_usb_audio,snd_bcm2835. pi@raspberrypi: ~ $ aplay -l **** List of PLAYBACK …
Use USB Sound Card in Raspberry Pi : 5 Steps - …
https://www.instructables.com/Use-USB-Sound-Card-in-Raspberry-Pi/
The Raspberry Pi should detect the USB Sound Card and load the kernel module (device driver) automatically. However, this is not guaranteed. So I need to check. Open terminal: sudo tail -f /var/log/messages. Refer to screenshot. The lines are irrelevent because I have not connected the USB Sound Card to Raspberry Pi yet.
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