HoaEncodeMatrix

Extension

Description

Encode an Array input of channels to a Higher Order Ambisonic signal (HOA) via an HoaMatrixEncoder.

Class Methods

.ar

Examples

Monophonic to HOA

This example is equivalent to encoding via HoaEncodeDirection, where radius = AtkHoa.refRadius.// 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 ~theta = 0.0; ~phi = 0.0; ~matrixEncoder = HoaMatrixEncoder.newDirection(~theta, ~phi, order: ~order); // audition ( { // saw params var freq = 110.0; var gain = -12; var sig; sig = Saw.ar(freq, gain.dbamp); HoaEncodeMatrix.ar(sig, ~matrixEncoder); }.play(outbus: ~outbus) ) // quit rt server s.quit

Axial encoding

Nothing fancy, just place six sinusoids on the axes.// 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); // freqs ~freqs = Array.series(~directions.size, 110.0, 110.0); ~amps = Array.series(~directions.size, 1, 1).reciprocal; // audition ( { var gain = -18; var sig; sig = SinOsc.ar(~freqs, mul: gain.dbamp * ~amps); HoaEncodeMatrix.ar(sig, ~matrixEncoder); }.play(outbus: ~outbus) ) // quit rt server s.quit