Differences

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--- hgk:hacks:gofter:gui [2015/11/17 12:38] – created michfiel
+++ hgk:hacks:gofter:gui [2015/11/19 14:58] (current) – removed michfiel
@@ Line 1: / Line 1: @@
-=== Pulses ===
-[[http://en.wikipedia.org/wiki/Pulse_wave]]
-A pulse wave form can simple be constructed by adding two saw waves; the phase difference will control the pulse width.
-<code>
-        double pw = pulseWidth / 2. + 1.;
-        double y1 = ((int)(f * i) % n) / n1;
-        double y2 = ((int)(f * i + pw) % n) / n1;
-        double y = (y1 - y2) * (1 + pulseWidth / n1);
-</code>
-=== Comb Filters ===
-[[http://en.wikipedia.org/wiki/Comb_filter]]
-The frequency response of a discrete-time system expressed in the Z domain is obtained by making the substitution z=exp(j*omega)
-<code>
-        double omega = 2 * pi * f/n;
-        double y = sqrt((1. + pow(alpha, 2.)) + 2 * alpha * cos(omega * K)) / 2;
-</code>