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ALSA - Debian Wiki
https://wiki.debian.org/ALSA#:~:text=Force%20the%20cards%20to%20load%20in%20a%20different,and%20the%20USB%20microphone%20to%20be%20card%201.
How to Assign USB Audio as primary sound device in …
https://www.crunchbang.org/forums/viewtopic.php?id=9852
# Assign USB Audio as default sound card options snd_usb_audio index=-1. Delete these last TWO lines in the file: # Keep snd-usb-audio from beeing loaded as first soundcard options snd-usb-audio index=-2. New file should look like this:
USB card as my default Audio Device - Raspberry Pi Stack ...
https://raspberrypi.stackexchange.com/questions/19705/usb-card-as-my-default-audio-device
The correct way to do it is to add options snd-usb-audio index=0 followed by options snd_bcm2835 index=1. Essentially what doing this is forcing the default sound module ( snd_bcm2835) to be disabled while the usb sound module ( snd-usb-audio) is enabled.
UbuntuStudio/UsbAudioDevices - Community Help Wiki
https://help.ubuntu.com/community/UbuntuStudio/UsbAudioDevices
To give the internal microphone the device number hw:1, we enter the line . options snd-usb-audio index=1 vid=0x046d pid=0x08c6. Still with me? OK! To configure multiple cards, I had to enter them on the same line, like this:
Updating ALSA Config | USB Audio Cards with a …
https://learn.adafruit.com/usb-audio-cards-with-a-raspberry-pi/updating-alsa-config
options snd-usb-audio index=0. Note we removed the # at the start of the line. For the latest Raspbian Wheezy versions, look for this line instead: options snd-usb-audio index=-2. There's no # to remove in this case, just change the index from …
raspbian - Audio and microphone configuration of usb sound ...
https://raspberrypi.stackexchange.com/questions/28158/audio-and-microphone-configuration-of-usb-sound-card-on-r-pi
If you have already gone into /etc/modprobe.d/alsa-base.conf and changed options snd-usb-audio index=-2 to options snd-usb-audio index=0 then: First: sudo nano ~/.asoundrc. Second: Add . pcm.!default { type hw card 0 } ctl.!default { type hw card 0 …
Matrix:Module-usb-audio - AlsaProject
https://www.alsa-project.org/wiki/Matrix:Module-usb-audio
# ALSA portion alias char-major-116 snd alias snd-card-0 snd-usb-audio # module options should go here # OSS/Free portion alias char-major-14 soundcore alias sound-slot-0 snd-card-0 # card #1 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 …
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
CMUSphinx Open Source Speech Recognition
https://cmusphinx.github.io/wiki/raspberrypi/
To options snd-usb-audio index=0. if there is some other options snd-usb-audio index=1, comment it out. sudo reboot cat /proc/asound/cards check your device is at 0 sudo apt-get install bison sudo apt-get install libasound2-dev. download sphinxbase latest , extract. ./configure --enable-fixed make sudo make install.
USB-AUDIO adapter microphone port on Raspberry Pi - …
https://support.plugable.com/t/usb-audio-adapter-microphone-port-on-raspberry-pi/6887
options snd-pcsp index=-2. Keep snd-usb-audio from beeing loaded as first soundcard. #options snd-usb-audio index=-2 options snd-usb-audio index=0 options snd_bcm2835 index=1. Prevent abnormal drivers from grabbing index 0. options bt87x index=-2 options cx88_alsa index=-2 options snd-atiixp-modem index=-2 options snd-intel8x0m index=-2
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