HoaXformMatrix

Extension

Description

Transform a Higher Order Ambisonic signal (HOA) via an HoaMatrixXformer.

Class Methods

.ar

Examples

Mirror

This example is equivalent to mirroring via HoaReflect.

Encode six sinusoids on the axes, then reflect across the origin.// simple test... // boot rt server s.boot; // choose Ambisonic order ~order = 1 ~order = 2 ~order = 3 // choose an outbus, if need be ~outbus = 0 // open scope s.scope(~order.asHoaOrder.size, ~outbus); // design encoding matrix ~directions = [ [0.0, 0.0], [90.0, 0.0], [180.0, 0.0], [-90.0, 0.0], [0.0, 90.0], [0.0, -90.0], ].degrad; ~matrixEncoder = HoaMatrixEncoder.newDirections(~directions, order: ~order); // design mirroring matrix ~matrixXformer = HoaMatrixXformer.newReflect(\reflect, ~order); // freqs ~freqs = Array.series(~directions.size, 110.0, 110.0); ~amps = Array.series(~directions.size, 1, 1).reciprocal; // audition ( { var gain = -18; var sig, hoa; sig = SinOsc.ar(~freqs, mul: gain.dbamp * ~amps); hoa = HoaEncodeMatrix.ar(sig, ~matrixEncoder); HoaXformMatrix.ar(hoa, ~matrixXformer); }.play(outbus: ~outbus) ) // quit rt server s.quit