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How do I select a default sound card with alsa? - Ask …
https://askubuntu.com/questions/150851/how-do-i-select-a-default-sound-card-with-alsa
This is a way set default sound output card dynamically using PulseAudio (not ALSA). Check list of Sources and Sinks $ pactl list short sources 0 …
linux - How to make Alsa pick a preferred sound device ...
https://superuser.com/questions/626606/how-to-make-alsa-pick-a-preferred-sound-device-automatically
options snd_hda_intel index=-1. options snd_usb_intel index=-2. in this case usb device is preferred device. if you are having two differnt cards with same name from the output, like this: options snd_hda_intel. options snd_hda_intel. issue this command to find out which is which: cat /proc/asound/cards.
Select an audio input device with the Speech SDK - Azure ...
https://docs.microsoft.com/en-us/azure/cognitive-services/speech-service/how-to-select-audio-input-devices
Audio device IDs on Linux. The device IDs are selected by using standard ALSA device IDs. The IDs of the inputs attached to the system are contained in the output of the command arecord -L. Alternatively, they can be obtained by using the ALSA C library. Sample IDs are hw:1,0 and hw:CARD=CC,DEV=0. Audio device IDs on macOS
sound - Setting the default ALSA device for Pulseaudio ...
https://askubuntu.com/questions/294512/setting-the-default-alsa-device-for-pulseaudio
Answering the two questions: You can select the default device in PulseAudio with a GUI like the GNOME volume control, pavucontrol, or from the command line using pacmd set-default-sink.. By default, PulseAudio opens devices for 44.1 kHz or 48 kHz, whichever leads to lower resampling effort (so 96 kHz audio would usually lead to the device being opened at 48 kHz.
DeviceNames - AlsaProject
https://www.alsa-project.org/main/index.php/DeviceNames
The application can select which sound card to use. e.g. to use card 2, one would use: plug:default:Audigy2_1 plug:front:Audigy2_1 one could also use: plug:front:2 but using the name is better, as it tracks the card name even if on the next reboot the card number changes, for example, due to USB audio devices.
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