There are hidden gems in the SuperDirt engine. Note that you can also customize it with your own effects. This documentation, thus, is only covering the tip of the iceberg.
Vowel is installed with SuperDirt as a SuperCollider Quark. It uses a formant filter to emulate the sound of vowels applied to the sound.
|Parameter||Brief description||Typical range|
|vowel||formant filter to simulate vowels||a e i o u|
Pa * d('supersaw', n='40 52 64 52', vowel='e')