Sound sources & licenses
Everything you hear in the TRAX studio, and the terms it comes under. Your own recordings are always yours.
Tone.js
MIT License
The Web Audio framework TRAX builds on. Every Instrument Library sound, the synthesized drum kits and the studio's effects are generated live with it in your browser.
TRAX Original Sounds
CC0 1.0 (public domain dedication)
The 18 one-shots in the TRAX Boom Bap, TRAX Live Kit and TRAX House drum kits, the TRAX Spin Break (the Spin Sampler demo's loop: the TRAX Boom Bap kit plus a synthesized vocal "ahh") and the 15 TRAX Welcome Loops (eight bars at 120 BPM, built from the TRAX kits and TRAX synthesizers) — synthesized by TRAX and rendered offline, no third-party recordings. Use them in anything; credit appreciated, not required.
YIN pitch detection
Published algorithm (de Cheveigné & Kawahara, 2002), implemented by TRAX
How Autotune Lite and Hum-to-MIDI hear the pitch of a voice — on your device.
PSOLA pitch shifting
Classic signal-processing technique, implemented by TRAX
How Autotune Lite moves a note while keeping the timing and character of the voice.
Recorded sample packs (concert piano, orchestra, cinematic) are on the roadmap; each pack will be listed here with its license when it ships. See What’s New and Trust.