rsc3/doc-schelp/HelpSource/Classes/OscN.scrbl

#lang scribble/manual
@(require (for-label racket))

@title{OscN}
 Noninterpolating wavetable oscillator.@section{related}
  Classes/COsc, Classes/Osc, Classes/VOsc, Classes/VOsc3
@section{categories}
   UGens>Generators>Deterministic


@section{description}


Noninterpolating wavetable lookup oscillator with frequency and phase
modulation inputs. It is usually better to use the interpolating
oscillator  link::Classes/Osc:: .


@section{classmethods}
 

@section{method}
 ar, kr

@section{argument}
 bufnum
Buffer index.  the buffer size must be a power of 2.
The buffer should NOT be filled using Wavetable format (b_gen
commands should set wavetable flag to false. Raw signals (not
converted with asWavetable) can be saved to disk and loaded
into the buffer.


@section{argument}
 freq
Frequency in Hertz.

@section{argument}
 phase
Phase offset or modulator in radians.

@section{argument}
 mul
Output will be multiplied by this value.

@section{argument}
 add
This value will be added to the output.

@section{Examples}
 


@racketblock[

// compare examples below with interpolating Osc examples.

(
s = Server.local;
b = Buffer.alloc(s,512,1);
b.sine1(1.0/[1,2,3,4,5,6],true,false,true);

SynthDef("help-OscN",{ arg out=0,bufnum=0;
	Out.ar(out,
		OscN.ar(bufnum, 500, 0, 0.5)
	)
}).play(s,[0,0,1,b.bufnum]);

)
b.free;



(
// noninterpolating - there are noticeable artifacts
// modulate freq

s = Server.local;
b = Buffer.alloc(s,512,1);
b.sine1(1.0/[1,2,3,4,5,6].squared,true,false,true);

SynthDef("help-OscN",{ arg out=0,bufnum=0;
	Out.ar(out,
		OscN.ar(bufnum, XLine.kr(2000,200), 0, 0.5)
	)
}).play(s,[\out,0,\bufnum,b.bufnum]);

)
b.free;

(
// sounds very different than the Osc example
s = Server.local;
b = Buffer.alloc(s, 512, 1);
b.sine1([1.0], true, true, true);

SynthDef("help-OscN",{ arg out=0,bufnum=0;
	Out.ar(out,
		OscN.ar(bufnum,
			OscN.ar(bufnum,
				XLine.kr(1,1000,9),
				0,
				200,
				800),
			0,
			0.25)
	)
}).play(s,[\out, 0, \bufnum, b.bufnum]);

)
b.free;

(
// modulate phase
s = Server.local;
b = Buffer.alloc(s, 512, 1);
b.sine1([1.0], true, true, true);

SynthDef("help-OscN",{ arg out=0,bufnum=0;
	Out.ar(out,
		OscN.ar(bufnum,
				800,
				OscN.ar(bufnum,
						XLine.kr(20,8000,10),
						0,
						2pi),
				0.25)
	)
}).play(s,[\out, 0, \bufnum, b.bufnum]);
)
b.free;


(
// change the buffer while its playing
s = Server.local;
b = Buffer.alloc(s, 4096, 1);
b.sine1(1.0/[1,2,3,4,5,6], true, true, true);

SynthDef("help-OscN",{ arg out=0,bufnum=0;
	Out.ar(out,
		OscN.ar(bufnum, [80,80.2], 0, 0.2)
	)
}).play(s,[\out, 0, \bufnum, b.bufnum]);
)

(
Routine({
	var n = 32;
	50.do({
		b.sine1(Array.rand(n,0,1).cubed, true, true, true);
		0.25.wait;
	});
}).play;
)
b.free;

::

]