PulseDucking
Have you ever wanted to listen to music while hanging out in a voice chat, but you couldn't understand your friends because the music was too loud, or you couldn't enjoy the music because you had to lower its volume so much? Does it annoy you to manually stop Spotify every time you play a video? (WIP) Fear no more, because PulseDucking could be exactly what you want!
PulseDucking lowers the volume of your music (/…), whenever your voice chat (/…) becomes noisy.
Features
- Detect silence, not presence of an audio source or playback status. Discord, for example, won't close its audio output or update playback state when nobody is talking.
- Easy customization via a JSON config file.
Requirements
- Python 3
- PulseAudio
About the competition
PulseAudio ships with a module called module-role-ducking. It has an important problem, though: The software you use has to set their media.role property, so that module-role-ducking can identify whether it should trigger ducking or be ducked. Some do it – others don't.
How it's done
- For each currently running trigger application, a new thread is started.
- In each thread,
parec --monitor-stream=<STREAM_INDEX>is called. It streams the raw audio of an application. - By simply checking for
0x00, silence/noise is detected. pacmd set-sink-input-volume <master_index> <VOLUME>is dispatched for all ducking applications.- A loop ensures that new applications are taken into account as well.