Description
Use the comb~ object to apply the classic comb filtering effect to an audio input. The comb~ object mixes the current input sample with earlier input and/or output samples, according to the formula:
yn = axn + bxn-(DR/1000) + cyn-(DR/1000)
where R is the sampling rate and D is a delay time in milliseconds.
Examples
Arguments
max-delay [float]
The maximum delay time. Defaults to 10 ms if not specified.
initial-delay [float]
Initial delay time
gain-coefficient [float]
Gain coefficient
feedforward-coefficient [float]
The feedforward coefficient
feedback-coefficient [float]
The feedback coefficient
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]
Sets the justification for the object's text.
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
float
Arguments
3rd inlet: gain coefficient
4th inlet: feedforward coefficient
Right inlet: feedback coefficient
clear
signal
2nd inlet: delay time in milliseconds
3rd inlet: gain coefficient
4th inlet: feedforward coefficient
Right inlet: feedback coefficient
Output
signal
The filtered signal.
See Also
| Name | Description |
|---|---|
| Sound Processing Techniques | Sound Processing Techniques |
| allpass~ | Apply an allpass filter effect |
| delay~ | Delay a signal |
| reson~ | Resonant bandpass filter |
| teeth~ | Comb filter with feedforward and feedback delay control |
| MSP Delay Tutorial 6: Comb Filter | MSP Delay Tutorial 6: Comb Filter |
| Audio Filtering | Audio Filtering |