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

@title{(brz2 in)}


A two zero fixed midcut filter.  A special case fixed
filter. Implements the formula:

out(i) = 0.5 * (in(i) + in(i-2))

This filter cuts out frequencies around 1/2 of the Nyquist
frequency.

Compare:


@racketblock[
(audition (out 0 (mul (white-noise ar) 0.15)))
]


@racketblock[
(audition (out 0 (brz2 (mul (white-noise ar) 0.15))))
]


