Audio Mixer

Mix two audio tracks together. Overlay music with voice or combine multiple audio sources.

Upload & Configure

Main audio track

Main track volume 100%

Overlay audio track Max: 10MB total, 5 minutes

Overlay track volume 50%

Output Duration

Longest track Shortest track

What this tool does:

- Plays two audio tracks simultaneously
- Great for adding background music to voice
- Adjustable volume for each track
- Choose output duration based on tracks

Result

Upload 2 files to mix together

About Audio Mixer

About the Audio Mixer

The Audio Mixer overlays multiple audio tracks into a single file played at the same time — voice over a music bed, narration plus sound effects, or layered ambience. Unlike merging (which plays clips one after another), mixing stacks them together.

Balance the levels so the foreground stays clear over the background.

Frequently Asked Questions

Mixing vs merging?

Mixing plays tracks simultaneously (voice + music); merging joins them end to end. Use the Audio Merger for sequential clips.

How do I keep the voice clear over music?

Keep the music bed well below the voice, and run the result through the Volume Normalizer for a consistent final level.

Audio Merger

Join clips end to end instead.

Audio Crossfader

Blend between two clips.

Volume Normalizer

Level the final mix for delivery.

Bring this into your team's workflow

VoiceDeck adds AI-powered audio & video review and delivery for your whole team — so every file ships in spec, automatically.