Clarification on Audio Ducking setup for dialogue and background audio

[TLR_Pictures]

Hi everyone,

I am currently editing a movie with a sad scene where the characters are talking, but there are several silent pauses between dialogue lines. I want the background audio level to stay consistent and lower automatically whenever the characters speak.
I want to make sure I understand the Audio Ducking filter setup correctly in Shotcut:

• A1: Background Audio / Music
• A2: Dialogue / Vocals

My understanding of the setup:

• When the audio level on A2 (Vocals) is high, A1 (Background Audio) will duck (lower in volume).
• When A2 is silent, A1 returns to its normal volume.

Is this correct, or do I have the tracks/settings reversed? Any tips on setting the right threshold for natural-sounding dialogue pauses would be greatly appreciated!

Thanks!

[shotcut]

wrong track order, see docs or the video on the release news page

Timeline > Automatic Audio Ducking

This feature automatically reduces the audio volume of a track based on the tracks above it. You do not need to manually keyframe gain envelopes or split clips. However, you might need to think more about how you organize tracks and which clips you place on them. Any track on the timeline except the top track shows this in the Properties panel. [Screenshot of Properties with Automatic Audio Ducking] This was added in version 26.9.27. Check the checkbox to turn it on. It has some sensible def…

[TLR_Pictures]

Okay, Thank you so much.