Audio ducking level calculator
Calculate a real music ducking target from measured music and voice levels plus the voice-over-music margin you want.
Enter music and voice readings from the same dBFS meter and choose a voice margin; the tool returns the target music level, attenuation, and relative gain.
Result
Calculate from measured levels
Read the current music and speaking levels from the same meter and signal path, then choose how far the voice should sit above the music. The tool calculates the target music dBFS level, the attenuation required, and the corresponding relative gain.
Verify the audience route
The relative gain is not a device volume-slider percentage. Microphone position, mastering, dynamics processing, and platform loudness handling still affect the mix, so record a private rehearsal from the route the audience will actually hear.