#lang scribble/manual
@(require (for-label racket))

@title{(t-duty rate duration reset doneAction level gap)}


demand results as trigger from demand rate ugens.

A value is demanded each ugen in the list and output as a trigger
according to a stream of duration values.  The unit generators in
the list should be 'demand' rate.  When there is a trigger at the
reset input, the demand rate ugens in the list and the duration are
reset.  The reset input may also be a demand ugen, providing a
stream of reset times.

NOTE: sclang reorders the inputs to be 'duration reset level
doneAction', rsc does not.

duration   - time values. Can be a demand ugen or any signal.
	        The next trigger value is acquired after the
             duration provided by the last time value.

reset      - trigger or reset time values. Resets the list of ugens
             and the duration ugen when triggered. The reset input 
             may also be a demand ugen, providing a stream of reset 
             times.

doneAction - a doneAction that is evaluated when the duration 
             stream ends.

level      - demand ugen providing the output values.

Play a little rhythm


@racketblock[
(let ((s (dseq dinf (make-mce (list 0.1 0.2 0.4 0.3)))))
  (audition (out 0 (t-duty ar s 0 0 1 0))))
]

Amplitude changes


@racketblock[
(let ((t (t-duty ar 
		 (dseq dinf (make-mce (list 0.1 0.2 0.4 0.3)))
		 0
		 0
		 (dseq dinf (make-mce (list 0.1 0.4 0.01 0.5 1.0)))
		 0)))
  (audition (out 0 (ringz t 1000 0.1))))
]


@racketblock[
(let ((t (t-duty ar
		 (mouse-x kr 0.001 2 1 0.1)
		 0
		 0
		 (dseq dinf (make-mce (list 0.1 0.4 0.01 0.5 1.0)))
		 0)))
  (audition (out 0 (ringz t 1000 0.1))))
]