Audio Speed
Speed up or slow down audio playback without changing the pitch. This uses time-stretching algorithms to maintain natural-sounding audio at the new tempo. SnapOtter processes the speed change on your own server.
Features
- Adjustable speed multiplier from very slow to very fast playback
- Pitch-preserving time-stretch for natural-sounding results
- Supports MP3, WAV, OGG, FLAC, and AAC formats
- Maintains audio quality even at extreme speed changes
- All processing runs on your own server with no external dependencies
What you can do
- Speed up lecture recordings for faster review during exam preparation
- Slow down a fast-spoken foreign language recording for easier comprehension
- Adjust podcast playback speed for accessibility or personal preference
- Create slow-motion audio effects for dramatic sound design in video production
Self-hosted. Your files never leave your network.
SnapOtter runs entirely on your own infrastructure. Files processed with Audio Speed are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- Does changing speed also change the pitch?
- No. SnapOtter uses time-stretching algorithms that maintain the original pitch while changing the tempo. Speech and music sound natural at the new speed. Processing runs locally on your server.
- What speed range is supported?
- You can slow audio down or speed it up across a wide range of multipliers. Extreme values may produce artifacts in complex audio. SnapOtter processes everything on your own self-hosted instance.
- Will changing speed affect audio quality?
- Minor artifacts may appear at extreme speed changes, but the time-stretching algorithm preserves quality well for typical adjustments like 0.5x to 2x speed. All processing happens locally on your server.
Ready to try Audio Speed?
Deploy SnapOtter in under a minute. All 157 tools included. Open source and free forever.