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class:: ZeroCrossing
summary:: Zero crossing frequency follower
categories:: UGens>Analysis>Pitch
description::
Outputs a frequency based upon the distance between interceptions of the X axis. The X intercepts are determined via linear interpolation so this gives better than just integer wavelength resolution. This is a very crude pitch follower, but can be useful in some situations.
classmethods::
method:: ar, kr
argument::in
Input signal.
examples::
code::
s.boot;
(
{
var a;
a = SinOsc.ar(SinOsc.kr(1, 0, 600,700), 0, 0.1);
[a, ZeroCrossing.ar(a) * 0.0005]
}.scope;
)
::
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