How to Use the Mono to Stereo Spatializer & Widener
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1
Upload a mono or centered audio track.
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2
Choose a stereo expansion mode: Dual Mono, Haas Delay (psychoacoustic widening), or Phase Spread.
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3
Adjust the stereo width slider from 0% (pure mono) to 100% (wide stage).
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4
Preview with headphones and export your widened stereo WAV file.
Practical Example & Use Case
Common Real-World Scenario
Giving a single-mic acoustic guitar recording or voiceover track a broader, more modern stereo presence in a mix.
Technical Notes & Limitations
Browser Engine Architecture
Calculates delayed and inverted phase channels with mono-compatibility preservation.
Frequently Asked Questions
What is the Haas effect?
The Haas effect uses small micro-delays (10-30 ms) between ears to create a psychoacoustic perception of spaciousness without noticeable echo.