Sweep : UGen : AbstractFunction : Object

Description

Starts a linear raise by rate/sec from zero when trig input crosses from non-positive to positive.

When rate == 1, Sweep may be used to get a continually-updating measurement of the time (in seconds) since the last trigger.

Class Methods

Sweep.ar(trig: 0.0, rate: 1.0)

Sweep.kr(trig: 0.0, rate: 1.0)

Inherited class methods

Instance Methods

Inherited instance methods

Examples

Sweep can be used as a resettable Phasor or Line - one that can start, pause, resume and stop. To get a resettable XLine behavior change the linlin to linexp in the SynthDef below.( SynthDef(\lineReset, { |out, start= 0, end= 1, dur= 1, t_trig= 1, run= 1| var phasor = Sweep.ar(t_trig, run / dur).linlin(0, 1, start, end, \minmax); phasor.poll; Out.ar(out, SinOsc.ar(phasor, 0, 0.2)); }).add; ) a = Synth(\lineReset, [\start, 400, \end, 800, \dur, 2]) a.set(\t_trig, 1) a.set(\run, 0) a.set(\run, 1) a.set(\t_trig, 1) a.free //shorter duration and downwards... a= Synth(\lineReset, [\start, 1000, \end, 500, \dur, 0.5]) a.set(\t_trig, 1) a.set(\run, 0) a.set(\run, 1) a.set(\t_trig, 1) a.free