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class:: Slope
summary:: Slope of signal
categories:: UGens>Analysis, UGens>Filters>Linear, UGens>Maths
description::
Measures the rate of change per second of a signal.
Formula implemented is:
code::
out[i] = (in[i] - in[i-1]) * sampling_rate
::
classmethods::
method:: ar, kr
argument::in
Input signal to measure.
argument::mul
argument::add
examples::
code::
(
{
var a, b, c, scale;
a = LFNoise2.ar(2000); // quadratic noise
b = Slope.ar(a); // first derivative produces line segments
c = Slope.ar(b); // second derivative produces constant segments
scale = 0.0002; // needed to scale back to +/- 1.0
[a, b * scale, c * scale.squared]
}.plot
)
::
For another example of Slope see link::Classes/AbstractFunction#-hypot::.
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