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Music Ducking Extension

When music and voice signals are mixed together the desired behavior is often to lower the music signal's volume to make the voice more audible. This is a useful mechanism for listen together experiences where users also talk to each other.

Two signals are needed for this behavior:

  • The ducked signal: usually the music signal, the volume of this signal gets lowered.
  • The ducking signal: this signal controls the ducking algorithm. This is usually based on a voice signal that is noise filtered.

This extension provides the following audio nodes for a Switchboard SDK audio graph:

MusicDuckingNodeApplies the ducking algorithm on the music signal. Receives the ducking signal and the music signals and outputs the ducked music signal.