#lang scribble/manual @(require (for-label racket)) @title{(abs-dif a b)} Calculates the value of (abs (- a b). Finding the magnitude of the difference of two values is a common operation. @racketblock[ (audition (out 0 (mul (f-sin-osc ar 440 0) (abs-dif 0.2 (mul (f-sin-osc ar 2 0) 0.5))))) ]