vowel
From TidalCycles userbase
								
												
				Type: vowel :: Pattern String -> ControlPattern
vowel turns a string pattern into a control pattern that creates a formant filter to produce vowel sounds on samples.
Use values a, e, i, o, and u to add the effect.
The rest ~ character creates no effect:
d1 $ s "jvbass*4" # vowel "[a e ~ i o u]/8"