FreqScope frequency analyzer
FreqScope.new(width, height, busNum, scopeColor, bgColor)
FreqScope shows the frequency spectrum of the specified audio bus. The scope will
remain active after a command-period. To turn it off you must either click off the 'Power'
button or close the window.
Panel commands:
Power - Turns the scope on and off. This is useful for freezing the signal on the display
or for saving CPU.
BusIn - The audio bus to be analyzed.
FrqScl - Determines the mapping of frequencies on the x-axis. Can be linear (lin) or
logarithmic (log). Logarithmic is equal spacing per musical octave.
dbCut - Determines the lowest decibel shown on the y-axis.
// must use internal server
s = Server.internal.boot;
// create a new analyzer
FreqScope.new(400, 200, 0);
// basic sine
{ SinOsc.ar(2000, 0, 0.25) }.play(s);
// random saw
{ RLPF.ar(Saw.ar(110, 0.2), LFNoise2.kr(1,1e4,1e4), LFNoise2.kr(1, 0.2, 0.22)) }.play(s);
// modulate phase
{ SinOsc.ar(800, SinOsc.ar(XLine.kr(20,8000,10),0,2pi), 0.25) }.play(s);
// all harmonics
{ Blip.ar(200,Line.kr(1,100,10),0.2) }.play(s);