Whistle Synth

Mobile browsers are not recommended: they are generally not fast enough. You're welcome to continue if you want to, but it probably won't sound good and may not work at all.
Your browser doesn't support AudioWorklet, which this relies on. This isn't going to work. Try Firefox, Chrome, or Edge instead?


This is a synthesizer that you control by whistling (or singing). To begin, put on headphones, click "start", and whistle.

Works best in Firefox, but also works in Chrome and Edge.

Whistling Voices:
Singing Voices (sing "doooo"):

Output volume. Higher numbers are louder.
Simple low-pass filter. 1 means no filter, lower numbers filter more high harmonics.
Minimum frequency to detect (Hz).
Maximum frequency to detect (Hz).