SuperCollider CLASSES

LFSaw

Sawtooth oscillator
Inherits from: PureUGen : UGen : AbstractFunction : Object
Subclasses: LFCub, LFPar, LFTri

Description

A non-band-limited sawtooth oscillator. Output ranges from -1 to +1.

Class Methods

*ar (freq: 440, iphase: 0, mul: 1, add: 0)

*kr (freq: 440, iphase: 0, mul: 1, add: 0)

Arguments:

freq

Frequency in Hertz.

iphase

Initial phase offset. For efficiency reasons this is a value ranging from 0 to 2.

NOTE: enter "1" for an initial phase of 0 radiants. A value of 0 would start the cycle at pi radiants. See the example below.
mul

Output will be multiplied by this value.

add

This value will be added to the output.

Inherited class methods

Instance Methods

Inherited instance methods

Examples

{ LFSaw.ar(500, 1, 0.1) }.play

// used as both Oscillator and LFO:
{ LFSaw.ar(LFSaw.kr(4, 0, 200, 400), 0, 0.1) }.play

Display special behaviour of initial phase parameter:

// 0.15 seconds of 3-channel buffer
b = Buffer.alloc(s, s.sampleRate * 0.15, 3);

(
// generate Signal
m = SynthDef ("help-lfsawphase", {|rate = 20|
    var l;
    l = LFSaw.ar(rate, [0, 1, 2]); // three channels, three phases
    RecordBuf.ar(l, b, doneAction: 2, loop: 0);
    Out.ar(0, l * -20.dbamp);
}).play(s);
)

b.plot;    // see the difference