Choose audio, shape the mood, then preview and download.
Custom settings are active.
0 st keeps source pitch while changing tempo.
Classic mode: pitch follows speed.
Decay is approximate and varies by engine.
Actual output duration is shown after rendering.
User-set source BPM: · used for calculations
An estimate appears after loading.
Available when a source BPM is set.
Presets are starting points. For lower memory use, try tracks under 6 minutes.
Technical settings and errors only. No audio, filenames or artist tags. Nothing is automatically sent.
Signalsmith Stretch (MIT) handles independent pitch/tempo. Faust reverbs: Zita / Julius O. Smith, Dattorro / Jakob Zerbian, Freeverb / Romain Michon. MP3: lamejs 1.2.1 (LGPL). Full source and licences accompany the package.
Sample-peak protection may reduce gain; no true-peak limiter is included. Reverb is not noise removal. The full source duration is preserved; only quiet extra tail space is trimmed.