Classes (extension)
| Libraries > Ambisonic Toolkit > UGens > HOA > Transformer | UGens > Multichannel > Ambisonics
HoaFocus : HoaBLT : HoaUGen : Object
Extension
ExtensionHigher Order Ambisonic (HOA) focus transformer
Source: HoaUGen.sc
Description
Apply focus to a Higher Order Ambisonic signal (HOA) along an arbitrary axis & radius.
Class Methods
HoaFocus.ar(in, angle: 0, theta: 0, phi: 0, radius, order)
Arguments:
| in |
The input signal. |
| angle |
Distortion angle, in radians. -pi/2 to pi/2 |
| theta |
Azimuth, in radians. |
| phi |
Elevation, in radians. |
| radius |
Radius, in meters. |
| order |
Ambisonic order. |
Discussion:
Applies focus along the axis defined by theta and phi at radius.
Focus is a normalised dominance variant, specified in terms of a distortion angle. Positive values of angle maintain gain at [theta, phi], while reducing at [theta.neg, phi.neg]. Negative values do the inverse. The default, 0, results in no change.
In contrast with HoaZoom, gain is maintained at 0dB in the direction of distortion.
Imaging is illustrated here.
NOTE: Corresponding matrix transformer: HoaMatrixXformer: *newFocus
Inherited class methods
Instance Methods
Inherited instance methods
Examples
TBD
helpfile source: /Library/Application Support/SuperCollider/downloaded-quarks/atk-sc3/HelpSource/Classes/HoaFocus.schelp
link::Classes/HoaFocus::
link::Classes/HoaFocus::