#lang scribble/manual @(require (for-label racket)) @title{(mix UGen)} Force multiple channel expansion and sum signals. @racketblock[ (let ((f (make-mce (list 600.2 622.0 641.3 677.7)))) (audition (out 0 (mul (mix (f-sin-osc ar f 0)) 0.1)))) ] Expansion nests. @racketblock[ (let ((l (f-sin-osc ar (mce2 100 500) 0)) (r (f-sin-osc ar (mce2 5000 501) 0))) (audition (out 0 (mul 0.05 (mix (mce2 l r)))))) ]