Adjusting your sound card

Changing ALSA settings

BirdNET-Pi uses PulseAudio for most things, but you can adjust the ALSA settings using the available alsa-utils.

This can be helpful when you want to find the best levels for your recordings and live stream.

Open "Tools"
"Web Terminal" (Use your Raspberry Pi credentials if you are prompted to login).
Type alsamixer -m to enter the ALSA sound mixer in "mouse" mode to allow clicking
On this page, click the words in the top right corner "F6: Select sound card," which will open a selection window where you can click your USB sound card. Press Enter when it is selected.
Options for your sound card will appear. In the top left, click the words "F4: Capture" to go to the USB sound card's input level settings.
Use your mouse or the keyboard arrow keys to change the input level for the microphone.
Press esc when you are finished to close the alsamixer, and then type exit to close the "Web Terminal"