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

@title{(decay2 in attackTime decayTime)}


Exponential decay.  decay has a very sharp attack and can produce
clicks. decay2 rounds off the attack by subtracting one decay from
another.

(decay2 in a d) is equivalent to (sub (decay in d) (Decay in a)).

Used as an envelope


@racketblock[
(audition
 (out 0 (mul (decay2 (impulse ar (x-line kr 1 50 20 remove-synth) 0.25)
		     0.01
		     0.2)
	     (mul (f-sin-osc ar 600 0) 0.25))))
]

Compare the above with decay used as the envelope.


@racketblock[
(audition
 (out 0 (mul (decay (impulse ar (x-line kr 1 50 20 remove-synth) 0.25)
		    0.01)
	     (mul (f-sin-osc ar 600 0) 0.25))))
]