Tutorials and Topics - Peabody Computer Music

Tutorial 16Sampling:Record and play audio filesto trigger the next (randomly chosen) cue, so sfplay~ effectively restarts itself when eachcue is done.When a cue is completed, sfplay~ triggers the next cueNote the importance of the gate object in this patch. If it were not present, there would beno way to stop sfplay~ because each 0 cue would trigger another non-zero cue. The gatemust be closed before the 0 cue is sent to sfplay~.• In the patch marked “Play random excerpts”, click on the message box to preload thecues, then click on the toggle to start the process. To stop it, click on the toggle again.Turn audio off.SummaryFor large and/or numerous audio samples, it is often better to read the samples from thehard disk than to try to load them all into RAM. The objects sfrecord~ and sfplay~ providea simple way to record and play audio files to and from the hard disk. The sfplay~ objectcan have many audio files open at once. Using the preload message, you can pre-defineready cues for playing specific files or sections of files. The seek message to sfplay~ lets youtry different start and end points for a cue. When a cue is done playing (or is stopped)sfplay~ sends a bang out its right outlet. This bang can be used to trigger other processes,including sending sfplay~ its next cue.See Alsosfplay~sfrecord~Play audio file from diskRecord to audio file on disk142