NFECoeffs
Extension
ExtensionDescription
Higher Order Ambisonic (HOA) "by degree" radial filtering coefficients, returned for realization by FOS and SOS cascade.
Class Methods
.new
Create a new instance.
Arguments:
| degree |
Associated Legendre degree (ℓ). |
Instance Methods
.degree
Return Associated Legendre degree (ℓ).
.numFOS
Return number of FOS required for cascade.
.numSOS
Return number of SOS required for cascade.
Coefficients
.prox
Return a dictionary of near-field effect proximity radial filtering coefficients. See Coefficient Dictionary below.
Arguments:
| radius |
Radius, in meters. |
| sampleRate |
Sample rate, in Hz. |
| speedOfSound |
Speed of sound, in meters per second. |
.dist
Return a dictionary of near-field effect distance radial filtering coefficients. See Coefficient Dictionary below.
Arguments:
| radius |
Radius, in meters. |
| sampleRate |
Sample rate, in Hz. |
| speedOfSound |
Speed of sound, in meters per second. |
.ctrl
Return a dictionary of near-field effect control radial filtering coefficients. See Coefficient Dictionary below.
Arguments:
| encRadius |
Encoding radius, in meters. |
| decRadius |
Decoding radius, in meters. |
| sampleRate |
Sample rate, in Hz. |
| speedOfSound |
Speed of sound, in meters per second. |
Coefficient Dictionary
FOS and SOS coefficients are returned as rank two arrays of coefficients, available via the IdentityDictionary \sos and \fos keys. Additionally, a a normalizing scalar is also returned via the \g key.
~degree = 3;~encRadius = 1.0;~decRadius = 1.5;~sampleRate = 44100;~coeffs = NFECoeffs.new(~degree).ctrl(~encRadius, ~decRadius, ~sampleRate);~coeffs.fos;~coeffs.sos;~coeffs.g;Examples
TBD