Enhance Speech with mic spill from second speaker – best workflow?

Enhance Speech can sometimes boost the faint background voice if it thinks it’s part of the main speech, but most of the time it still focuses on the loudest/clearest voice in the file. Low-level mic bleed usually gets reduced, not amplified — but it depends on how clean the separation is.

Why it happens

Enhance Speech isn’t multitrack-aware — it doesn’t know who “Speaker A” or “Speaker B” is. It just analyzes whatever audio is inside the file and tries to identify the primary voice.
If the off-mic voice is very quiet and muffled, it usually gets treated as noise.
If the bleed is mid-level or sometimes clearer, the AI may try to enhance it.

Best Workflow to Avoid Boosting Background Voices

1. Treat each speaker separately (you’re already doing this correctly).

Always run each isolated mic through Enhance Speech individually.

2. Lower the off-mic bleed before Enhance Speech.

Use one of these methods before uploading:

• Noise gate → Set a gate on each track so anything below a certain level (the bleed) gets reduced or muted.

• Strip silence → Automatically cuts low-level background chatter between phrases.

• Dialogue noise reduction (RX Voice De-noise, Adobe Denoise, etc.) → Very effective for removing faint bleed.

➡️ Doing this prevents the AI from thinking the background voice is “speech worth boosting.”

3. After Enhance Speech:

• Line up the tracks in your DAW.

• Reduce cross-bleed further by lowering the opposite mic during the other speaker’s speech (“manual ducking”).

Most Reliable Workflow (Recommended)

1. Noise gate or strip silence on each speaker track

2. Light noise reduction (optional but helpful)

3. Run each file through Enhance Speech

4. Final mix (balance levels, adjust volume, add light compression)