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CLASS::Harmonics
summary:: Convenient factory for filling buffers with harmonics on the server
categories:: Collections, Server, UGens>Buffer
DESCRIPTION::
Harmonics objects are convenient factories for creating Arrays that are used to fill buffers using the b_gen sine fill commands on the server.
CLASSMETHODS::
method::new
Create a new Harmonics array of size. Nothing is filled in for you, until instance methods are applied.
code::
a = Harmonics.new(16); // just returns an instance of Harmonics with size
::
INSTANCEMETHODS::
method::ramp
code::
a.ramp(1.0, 1.0); // returns a harmonic series
b = Buffer.alloc(s, 512, 1);
// harmonic series for freqs, ramp down for amps
b.sine2(a.ramp(1.0, 1.0).postln, a.ramp(0.5, -0.025).postln, true, true, true);
(
z = SynthDef("help-Osc",{ arg out=0,bufnum=0;
Out.ar(out,
Osc.ar(bufnum, 200, 0, 0.5)
)
});
)
y = z.play(s,[\out, 0, \bufnum, b]);
y.free;
::
method::decay
Implements the formula: 1 / ((i+1) ** k)
code::
a.decay(1.0);
b.sine2(a.ramp(1.0, 1.0).postln, a.decay(1.0).postln, true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
y.free;
::
method::geom
Implements the formula: 1 / (i ** k)
code::
a.geom(1.2);
b.sine2(a.ramp(1.0, 1.0).postln, a.geom(1.2).postln, true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
y.free;
::
method::formant
Create a formant like structure.
code::
a.formant(6, 3);
b.sine2(a.formant(12, 3).postln, a.geom(1.2), true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
y.free;
::
method::teeth
code::
a.teeth(6, 3);
b.sine2(a.teeth(2, 3).postln, a.geom(1.2), true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
b.sine2(a.teeth(4, 1).postln, a.geom(1.2), true, true, true);
b.sine2(a.teeth(1, 3).postln, a.geom(1.2), true, true, true);
b.sine2(a.teeth(2, 3).postln, a.geom(1.2), true, true, true);
y.free;
::
method::cutoff
Returns 1.0 to the nth place, fills the rest with 0.0
code::
a.cutoff(3);
b.sine2(a.ramp(1.0, 1.0), a.cutoff(3), true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
b.sine2(a.ramp(1.0, 1.0), a.cutoff(3), true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.cutoff(5), true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.cutoff(1), true, true, true);
y.free;
::
method::shelf
code::
a.shelf(0, 6, 1, 0);
b.sine2(a.ramp(1.0, 1.0), a.shelf(0, 6, 1, 0).postln , true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
b.sine2(a.ramp(1.0, 1.0), a.shelf(0, 11, 1, 0).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.shelf(2, 6, 1, 0).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.shelf(6, 8, 1, 0).postln , true, true, true);
y.free;
::
method::sine
code::
a.sine(8, 0, 1, 0);
b.sine2(a.ramp(1.0, 1.0), a.sine(8, 0, 1, 0).postln , true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
b.sine2(a.ramp(1.0, 1.0), a.sine(4, 0, 1, 0).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.sine(2.2, 0.5pi, 0.4, 0.2).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.sine(pi, 0.25pi, 0.5, 0).postln , true, true, true);
y.free;
::
method::pulse
code::
a.pulse(8, 0, 2, 1, 0);
b.sine2(a.ramp(1.0, 1.0), a.pulse(8, 0, 2, 1, 0).postln , true, true, true);
y = z.play(s,[\out, 0, \bufnum, b]);
b.sine2(a.ramp(1.0, 1.0), a.pulse(8, 0, 2, 1, 0).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.pulse(4, 0, 2, 0.4, 0.2).postln , true, true, true);
b.sine2(a.ramp(1.0, 1.0), a.pulse(7, 0.5pi, 3, 0.5, 0.1).postln , true, true, true);
y.free;
::
method:: rand, exprand, linrand
method:: rand2
method:: coin
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