rect~
Description
Use the rect~ object to generate an anti-aliased rectangle wave.
Examples
Spectral comparison of rect~ and an ideal rectangular wave driven by a phasor~
Arguments
frequency [number]
Optional
First argument sets the initial frequency of the oscillator. The default is 0.
pulse-width [number]
Optional
An optional second argument sets the pulse width. The default is 0.5.
Attributes
Common Box Attributes
Messages
int
Arguments
frequency
[int]
In left inlet: Sets the frequency of the oscillator.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
float
Arguments
frequency
[float]
In left inlet: Sets the frequency of the oscillator.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
signal
In left inlet: Sets the frequency of the oscillator.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
In right inlet: (optional) A sync signal. When the control signal crosses from below 0.5 to above 0.5, the oscillator resets itself. A phasor~ object works well for this purpose. The classic use is to set this control signal to your fundamental frequency and "sweep" the left frequency input in a range somewhere several octaves higher than the fundamental.
In middle inlet: Sets the pulse width of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a rectangular wave that spends equal amounts of time on the positive and negative edges of its cycle.
In right inlet: (optional) A sync signal. When the control signal crosses from below 0.5 to above 0.5, the oscillator resets itself. A phasor~ object works well for this purpose. The classic use is to set this control signal to your fundamental frequency and "sweep" the left frequency input in a range somewhere several octaves higher than the fundamental.
synctrig
Arguments
sync-value (0 through 1)
[float]
The word synctrig followed by a floating-point number changes the value at which the object resets itself (i.e., when the input signal crosses from below the specified number to being above it, rect~ will reset itself).
Output
signal
An antialiased rectangular waveform. An ideal, straight-line rectangular wave generated in a computer contains aliased frequencies that can sound irritating. rect~ produces a nice, analog-esque output waveform.
See Also
| Name | Description |
|---|---|
| cycle~ | |
| phasor~ | |
| saw~ | |
| techno~ | |
| tri~ | |
| MSP Basics Tutorial 3: Wavetable Oscillator | MSP Basics Tutorial 3: Wavetable Oscillator |