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A simple PulseAudio test program for monitoring volume ...
https://gist.github.com/jasonwhite/1df6ee4b5039358701d2
A simple PulseAudio test program for monitoring volume changes on the default sound sink. Raw pulsetest.cc This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
pulseaudio - Speaker-test returns Device or resource busy ...
https://unix.stackexchange.com/questions/580429/speaker-test-returns-device-or-resource-busy
speaker-test lsof /dev/snd/* fuser -fv /dev/snd/* apt-get remove pulseaudio. output. speaker-test 1.1.8 Playback device is default Stream parameters are 48000Hz, S16_LE, 1 channels Using 16 octaves of pink noise Playback open error: -16,Device or resource busy COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME alsactl 384 root 4r CHR 116,0 …
PulseAudio/Examples - ArchWiki
https://wiki.archlinux.org/title/PulseAudio/Examples
Correct interaction with PulseAudio is done using a D-Bus based audio card "acquire/release" mechanism. When JACK server starts, it asks this D-Bus service to acquire the audio card and PulseAudio will unconditionally release it. When JACK server stops, it releases the audio card that can be grabbed again by PulseAudio.
pulseaudio - HDMI audio fails speaker-test - Ask Ubuntu
https://askubuntu.com/questions/419726/hdmi-audio-fails-speaker-test
$ speaker-test -c2 -D hw:0,3 -r48000 speaker-test 1.0.27.1 Playback device is hw:0,3 Stream parameters are 48000Hz, S16_LE, 2 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 64 to 16384 Period size range from 32 to 8192 Using max buffer size 16384 Periods = 4 was set period_size = 4096 was ...
Troubleshooting - freedesktop.org
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Users/Troubleshooting/
OK, so let's test a few things. First things first, make sure you can hear sound output directly to ASLA. The easiest way to do this is with mplayer. Find some music track (e.g. an MP3 or Ogg file) and run mplayer -ao alsa:device=hw=0 yourchosentrack.mp3. This should play your track and bypass pulseaudio completely.
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