Audio Speed Changer
Change audio playback speed with optional pitch correction.
How to Use the Audio Speed Changer
Upload an audio file and adjust the speed slider from 0.25x (quarter speed) to 4x (quadruple speed). Use preset buttons for common speeds. Toggle pitch correction on to keep the pitch constant, or off to let pitch change with speed. Preview the modified audio before downloading.
Features
This audio speed changer supports speeds from 0.25x to 4x. Includes pitch correction to maintain original vocal pitch at different speeds. Visual waveform shows your audio. Preset speed buttons for quick access. Preview modified audio before downloading as WAV.
Pitch Correction Explained
With pitch correction enabled, the tool adjusts the pitch to keep voices and instruments sounding natural at the new speed (useful for slowing down music without making it sound lower). With it disabled, the pitch changes proportionally with speed (useful for creating radio effects or chipmunk voices).
Frequently Asked Questions
What is pitch correction?
Pitch correction maintains the original tone of your audio when you change the speed. Without it, slowing audio down makes it sound lower, and speeding up makes it sound higher.
What speeds are available?
You can set any speed from 0.25x (quarter speed) to 4x (quadruple speed) using the slider, or use the preset buttons for quick access to common speeds.
Can I preview before downloading?
Yes. Click "Preview Modified Speed" to hear a sample of your audio at the new speed before downloading.
Is my audio processed privately?
Yes. All processing happens in your browser using the Web Audio API. Your file never leaves your device.
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