Description
tri~ generates a triangle wave whose component frequencies are resistant to aliasing.
Examples
Arguments
initial-frequency [number]
The first argument sets the initial frequency of the oscillator. The default is 0.
duty-cycle [float]
The second argument sets the duty cycle. The default is 0.5.
Attributes
Common Box Attributes
annotation [symbol]
Sets the text that will be displayed in the Clue window when the user moves the mouse over the object.
background [int] (default: 0)
Adds or removes the object from the patcher's background layer. background 1 adds the object to the background layer, background 0 removes it. Objects in the background layer are shown behind all objects in the default foreground layer.
color [4 floats]
Sets the color for the object box outline.
fontface [int]
Sets the type style used by the object. The options are:
plain
bold
italic
bold italic
Possible values:
0 = 'regular'
1 = 'bold'
2 = 'italic'
3 = 'bold italic'
fontname [symbol]
Sets the object's font.
fontsize [float]
Sets the object's font size (in points).
Possible values:
'8'
'9'
'10'
'11'
'12'
'13'
'14'
'16'
'18'
'20'
'24'
'30'
'36'
'48'
'64'
'72'
hidden [int] (default: 0)
Toggles whether an object is hidden when the patcher is locked.
hint [symbol]
Sets the text that will be displayed in as a pop-up hint when the user moves the mouse over the object in a locked patcher.
ignoreclick [int] (default: 0)
Toggles whether an object ignores mouse clicks in a locked patcher.
patching_rect [4 floats] (default: 0. 0. 100. 0.)
Sets the position and size of the object in the patcher window.
position [2 floats]
Sets the object's x and y position in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its size unchanged.
presentation [int] (default: 0)
Sets whether an object belongs to the patcher's presentation.
presentation_rect [4 floats] (default: 0. 0. 0. 0.)
Sets the x and y position and width and height of the object in the patcher's presentation, leaving its patching position unchanged.
rect [4 floats]
Sets the x and y position and width and height of the object in both patching and presentation modes (if the object belongs to its patcher's presentation).
size [2 floats]
Sets the object's width and height in both patching and presentation modes (if the object belongs to its patcher's presentation), leaving its position unchanged.
textcolor [float]
Sets the color for the object's text in RGBA format.
textjustification [int]
Text Justification
Possible values:
0 = 'left'
1 = 'center'
2 = 'right'
varname [symbol]
Sets the patcher's scripting name, which can be used to address the object by name in pattr, scripting messages to thispatcher, and the js object.
Messages
int
Arguments
In middle inlet: Sets the duty cycle of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a triangular wave that spends equal amounts of time sloping positively and negatively.
float
Arguments
In middle inlet: Sets the duty cycle of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a triangular wave that spends equal amounts of time sloping positively and negatively.
signal
In middle inlet: Sets the duty cycle of the oscillator. Signal is wrapped into the range 0-1. A value of 0.5 will produce a triangular wave that spends equal amounts of time sloping positively and negatively.
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 "sweep" this control signal in a frequency range somewhere at least three or four octaves higher than the fundamental frequency.
Output
signal
An antialiased triangular waveform. An ideal, straight-line triangular wave generated in a computer contains aliased frequencies that can sound irritating. tri~ produces a nice, analog-esque output waveform.
See Also
| Name | Description |
|---|---|
| cycle~ | Sinusoidal oscillator |
| phasor~ | Generate sawtooth signals |
| rect~ | Antialiased rectangular (pulse) oscillator |
| saw~ | Antialiased sawtooth oscillator |
| techno~ | Signal-driven step sequencer |
| triangle~ | Triangle/ramp wavetable |
| MSP Basics Tutorial 3: Wavetable Oscillator | MSP Basics Tutorial 3: Wavetable Oscillator |