#lang scribble/manual @(require (for-label racket)) @title{(trig1 in dur)} When `in' is trigered output a unit signal for `dur' seconds. @racketblock[ (let ((a (trig1 (dust ar 1) 0.2))) (audition (out 0 (mul3 (f-sin-osc ar 800 0) a 0.2)))) ]