#lang scribble/manual @(require (for-label racket)) @title{(is-strictly-positive a)} Predicate to determine if a value is strictly positive. (define (is-strictly-positive a) (gt a 0.0)) (let* ((a (line ar -1 1 1 remove-synth)) (b (is-strictly-positive a)) (f (mul-add (mce2 a b) 600 900))) (audition (out 0 (mul (sin-osc ar f 0) 0.1))))