Speed up (or slow down) any audio
Lectures at 1.5×, voice memos at 2×, music slowed to 0.75× to learn the riff — playback-speed controls exist in apps, but baking the speed into the file means it plays right everywhere. This studio renders tape-style speed changes (pitch follows, like vinyl) plus volume boost, fades, and reverse into a fresh MP3, WAV, or FLAC. Pre-set to 1.5× below; drop audio and render.
How to change audio speed
- 1Drop your audio on the studio above. Speed is pre-set to 1.5× — adjust the slider freely.
- 2Stack effects freely. Add volume boost for quiet takes, fades for smoothness, or reverse for fun — the summary shows the full chain.
- 3Hit Apply and download. Duration scales with speed: 1.5× turns 10 minutes into ~6:40.
Speed sweet spots
Speech: 1.25–1.75×
Podcasts and lectures stay fully comprehensible up to ~1.75×. Past 2×, even chipmunks give up.
Music practice: 0.5–0.75×
Slowing a solo keeps pitch relationships intact (everything drops together), making fast passages learnable.
Pitch follows speed
This is tape-style processing: 2× sounds chipmunk-high, 0.5× sounds slowed-down deep. That's the charm — and the warning.
Frequently asked questions
How do I speed up an audio file?
Drop it above — 1.5× is pre-selected. Hit Apply effects and download. The new file plays fast everywhere, no special player needed.
Why does my voice sound chipmunk-like?
Tape-style speed changes move pitch with tempo — faster means higher, like sped-up vinyl. Slow down below 1× for the opposite deep effect.
Can I slow audio down instead?
Yes — drag to 0.5–0.75×. Great for transcribing interviews, learning solos, or savoring moments.
Does speed change affect file size?
Faster files are shorter, so yes — 2× roughly halves duration and size. Slower files grow correspondingly.
Is my audio uploaded?
No. Rendering runs entirely in your browser with Web Audio.