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

@title{(ring2 a b)}


Ring modulation plus both sources.  Return the value of ((a*b) + a
+ b). This is more efficient than using separate unit generators
for the multiply and add.

See also mul, Ring1, Ring3, Ring4.


@racketblock[
(audition
 (out 0 (mul (ring2 (f-sin-osc ar 800 0)
		    (f-sin-osc ar (x-line kr 200 500 5 do-nothing) 0))
	     0.125)))
]


@racketblock[
(let ((a (f-sin-osc ar 800 0))
      (b (f-sin-osc ar (x-line kr 200 500 5 do-nothing) 0)))
  (audition
   (out 0 (mul (add3 (mul a b) a b) 0.125))))
]