pulseaudio dla głupiego Wieśka :)

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Upgrade systemu i problemy z dźwiękiem
z poziomu usera:
systemctl --user stop pulseaudio.service && systemctl --user stop pulseaudio.socket
z poziomu roota:
apt autoremove --purge -y alsa-base alsa-utils pulseaudio linux-sound-base libatopology2 libwebrtc-audio-processing1 xfce4-pulseaudio-plugin
rm -rf ~/.config/pulse /tmp/pulse* ~/.pulse ~/.pulse-cookie /etc/pulse
apt autoclean && sudo apt autoremove -y
apt update && sudo apt upgrade -y
shutdown now

apt install -y alsa-base alsa-utils pulseaudio linux-sound-base libatopology2 libwebrtc-audio-processing1 xfce4-pulseaudio-plugin


sudo cat << EOF >> /etc/pulse/default.pa

### Enable Echo/Noise-Cancellation
load-module module-echo-cancel use_master_format=1 aec_method=webrtc aec_args="analog_gain_control=0\ digital_gain_control=1\ noise_suppression=1\ voice_detection=1\ agc_start_volume=85" source_name=echoCancel_source sink_name=echoCancel_sink
set-default-source echoCancel_source
#set-default-sink echoCancel_sink
EOF

tail -n4 /etc/pulse/default.pa

z poziomu usera
systemctl --user enable pulseaudio
shutdown now


Statyczny szum (opcjonalnie/profilaktycznie)
znajdz i odkomentuj (usuń ";") i zmień wartość w "/etc/pulse/daemon.conf" (zapewne linia 54)
avoid-resampling = yes

sudo sed 's/; avoid-resampling = false/avoid-resampling = yes/g' -i /etc/pulse/daemon.conf && grep -Fx "avoid-resampling = yes" /etc/pulse/daemon.conf

sprawdź "hw:x, y" twojej karty dźwiękowej
arecord --list-devices | grep card

card 1: PCH [HDA Intel PCH], device 0: ALC3226 Analog [ALC3226 Analog]


nagraj próbkę
arecord -f dat -r 60000 -D hw:1,0 -d 5 ~/Desktop/test.wav

Recording WAVE 'Desktop/test.wav' : Signed 16 bit Little Endian, Rate 60000 Hz, Stereo
Warning: rate is not accurate (requested = 60000Hz, got = 48000Hz)
         please, try the plug plugin

sprawdź aktualną wartość
grep "default-sample-rate" /etc/pulse/daemon.conf
; default-sample-rate = 44100

Podmień wartość za pomocą komendy:
sudo sed 's/; default-sample-rate = 44100/default-sample-rate = 48000/g' -i /etc/pulse/daemon.conf && grep -Fx "default-sample-rate = 48000" /etc/pulse/daemon.conf

systemctl --user restart pulseaudio.service

arecord -f dat -r 48000 -D hw:1,0 -d 10 Desktop/test.wav