The examples above show two different ways that you can trigger sound files while keeping in sync with a particular beat when the durations of the sound files are not perfect multiples of the beat duration, hence triggering the next sound file at the ending point of the current sound file results in the next sound file being started off the beat.
To set a list of cue points in an audio file and have them played in order, use either sfplay~ (with a set of cues established by preload messages to sfplay~ or to sflist~) or buffer~ (with start messages to play~, the parameters of which are stored in a coll).
This example shows how you can turn on and off audio files with a single toggle –– as in swapping between one and the other. Since 1 is on and 0 is off, you can use a == 0 object to produce the opposite (to turn one thing off when you turn the other on and vice versa). This can be seen in action in the example on the left.
You can use the line~ object to supply a changing speed value to the right inlet of the sfplay~ object. The second outlet of the function object sends out a list message intended to describe the function to a line~ object.
The way we commonly avoid clicks when changing the amplitude of a sound is to interpolate smoothly sample-by-sample from one gain factor to another, using an object such as line~. Does that same technique work well for making a smooth change from one delay time to another? As it turns out, that's not the best way to get a seamless unnoticeable change from one delay time to another, because changing the delay time gradually will actually cause a pitch shift in the sound.
Whenever the time interval of a metro object is specified using tempo-relative time units such as note values, the operation of that metro will be governed by the transport.
This example combines seven pre-recorded saxophone sounds, slowly modulating several aspects of their playback to create an ever-changing mix.
This is effectively pretty much identical to Trigger sound cues from the computer keyboard, but a) it allows the user to trigger sound cues either
This shows how to prepare multiple sound cues for playback, and how to detect specific keystrokes in order to trigger the sound cues. It also shows how to initialize a program by triggering certain messages as soon as the patch is opened. The sound signal is sent through a multiplier to adjust the gain (volume).