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.
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Instructions

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).

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