atk-sc3/Classes (extension)
| Libraries > Ambisonic Toolkit > UGens > FOA > Transformer | UGens > Multichannel > Ambisonics
FoaPsychoShelf
Extension
ExtensionFirst Order Ambisonic (FOA) psychoacoustic shelf filter
Description
Apply psychoacoustic shelf filtering to a First Order Ambisonic signal (B-format).
Class Methods
.ar
Arguments:
| in |
The B-format signal, an array: [w, x, y, z] |
| freq |
Shelf filter corner frequency, in Hz. |
| k0 |
High frequency scale for 0-order harmonic: W. |
| k1 |
High frequency scale for 1st-order harmonics: X, Y, Z. |
| mul |
Output will be multiplied by this value. |
| add |
This value will be added to the output. |
Discussion:
FoaPsychoShelf is invoked by FoaDecode when a dual-band psychoacoustically optimised decoder1 is called by setting k to 'dual'. This kind of decoder is the optimum choice for small scale studio or domestic settings.
NOTE: In normal circumstances, the user will not call FoaPsychoShelf directly.
Examples
Please see this.
[1] - See: E. Benjamin, R. Lee, and A. Heller, "Is My Decoder Ambisonic?," in Proceedings of the 125th Audio Engineering Society Convention, San Francisco, 2008.