SuperCollider CLASSES (extension)
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FoaNFC
Extension
ExtensionFirst Order Ambisonic (FOA) nearfield compensation filter
Description
Apply nearfield compensation filtering to a first order ambisonic signal (B-format).
Class Methods
*ar (in, distance: 1, mul: 1, add: 0)
Arguments:
| in |
The B-format signal, an array: [w, x, y, z] |
| distance |
The distance, in meters. WARNING: Distance = 0 is an invalid value! |
| mul |
Output will be multiplied by this value. |
| add |
This value will be added to the output. |
Discussion:
FoaNFC facilitates the reduction or removal of the proximity effect from encoded signals. The proximity effect can be an important contributor to perceptions of nearness.
Nearfield compensation1 is usually used in conjunction with FoaDecode to compensate for the distance of loudspeakers on playback. Additionally, FoaNFC can also be used to reduce the proximity effect found in nearfield recordings.
The Ambisonic Toolkit's proximity filter, FoaProximity, undoes FoaNFC given the same distance argument.
Inherited class methods
Instance Methods
Inherited instance methods
Examples
[1] - Usually called distance compensation in the classic Ambisonics literature.
helpfile source: /usr/local/share/SuperCollider/Extensions/SC3plugins/ATK/HelpSource/Classes/FoaNFC.schelp
link::Classes/FoaNFC::
sc version: 3.9dev
link::Classes/FoaNFC::
sc version: 3.9dev