som

sudo apt install mp3gain
mp3gain -c -r *.mp3

editar o ficheiro /etc/pulse/default.pa e acrescentar no final:

load-module module-echo-cancel source_name=logitechsource source_properties=device.description=LogitechHD
set-default-source logitechsource

para evitar que o módulo ajuste automaticamente o volume:

load-module module-echo-cancel aec_method=webrtc aec_args="analog_gain_control=0 digital_gain_control=1"

https://www.youtube.com/watch?v=gr1FZ2F7KYA&list=PLvB_ffZs45ufhOnw1epfj…

https://github.com/josh-richardson/cadmus
https://github.com/werman/noise-suppression-for-voice

https://opensource.com/article/17/1/linux-plays-sound

spd-say "isto é um teste"

alsa force-reload