#lang scribble/manual @(require (for-label racket)) @title{(buf-dur rate bufnum)} Current duration of buffer. @racketblock[ (with-sc3 (lambda (fd) (async fd (b-alloc-read 0 "/home/rohan/audio/metal.wav" 0 0)))) ] @racketblock[ (let* ((t (impulse ar (recip (buf-dur kr 0)) 0)) (p (sweep t (buf-sample-rate kr 0)))) (audition (out 0 (buf-rd 1 ar 0 p 0 2)))) ]