Soundtrack Studio web test

The sound engine, ported to Rust, running in your browser. This page checks three things: how long the instruments take to download, how quickly the browser renders a song, and how fast a key press turns into sound.

1 Listen

Pick a piece. The browser downloads the instruments it needs (once, then they stay cached), then composes the sound itself, with no server work.

0:00 / 0:00

2 Play live

Click the keys, use your computer keyboard (A–K for white keys, W E T Y U for black, Z/X to change octave), or plug in a MIDI keyboard. It works while the piece plays, too.

MIDI: checking… 0 notes sounding

Computer keys play from C4.

3 Measurements

Browser–
Instrument download–
Decoding the recordings–
Rendering the piece–
Key to sound–
Live playing load–
Same sound as the Java app?–
Memory–