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

@title{(x-line rate start end dur doneAction)}


Exponential line generator.  Generates an exponential curve from
the start value to the end value. Both the start and end values
must be non-zero and have the same sign.

start      - starting value
end        - ending value
dur        - duration in seconds
doneAction - a doneAction to be evaluated when the x-line is
             completed. See env-gen for details.


@racketblock[
(let ((f (x-line kr 200 17000 10 remove-synth)))
  (audition (out 0 (mul (sin-osc ar f 0) 0.1))))
]