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);