Stereo Audio Widener Online

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Broaden the spatial dimension and width of stereo audio recordings. Apply Haas-effect psychoacoustic micro-delays and Mid-Side processing for an expansive sound.

Adjustable stereo width from 100% to 300%
Haas effect psychoacoustic micro-delay
Preserves mono center compatibility

Expand the perceived soundstage

Mid-Side widening increases the proportion of side information relative to the mono center, pushing guitars, synthesizers, and ambient effects outward into a 3D space.

Short spatial time offsets

The adjustable delay is measured in milliseconds, from 1 to 30 ms. It creates additional side information; depending on the source and setting, the result can sound wider, colored or slightly echo-like.

Maintain balanced punch and power

The mono center channel containing lead vocals and kick drums remains centered and solid, ensuring the mix does not become weak or hollow.

Check for mono phase compatibility

Extreme widening settings can cause slight phase cancellation on single-speaker smartphones. Test with moderate settings between 130% and 170% for best results.

Technical references: Web Audio API specification

Stereo Audio Widener FAQs

What is the difference between stereo panning and stereo widening?

Panning shifts a sound left or right across the stereo field. Widening expands both outer boundaries simultaneously to make the entire recording feel larger.

Will widening make my song sound hollow on phone speakers?

Our algorithm preserves the center mono component, which protects clarity when played back through single-speaker mobile devices.

Can I widen a mono voice recording?

Yes. The spatial delay line creates a pseudo-stereo Haas effect that turns a single mono microphone track into a spacious stereo image.

What is the optimal width setting for full music mixes?

A stereo width between 120% and 150% adds professional gloss and dimension without disturbing the acoustic balance of the original mix.

Does stereo widening cause audio to sound out of phase on phones?

Our widening algorithm retains the mono center channel, preserving vocal punch and clarity when played back through single-speaker mobile devices.

How does Stereo Audio Widener update its preview?

Stereo Audio Widener schedules a background render after a setting changes. The completed preview or analysis replaces the previous result automatically. Processing time depends on recording length and device performance; the status message shows when the new result is ready.

Stereo Audio Widener Online