Binaural decoding is easiest with the SC-HOA extensions. This example assumes that an encoded signal has been created with Encoding Ambisonics in SC.

Load HRTFs

Binaural decoding needs a set of head-related transfer functions (or binaural room impulse responses - BRIRs). These need to be loaded in to buffers in SuperCollider. They come with SC-HOA:

HOABinaural.loadbinauralIRs(s);

Decoder Synth

(
~decoder = {
Out.ar(0, HOABinaural.ar(~order, In.ar(~ambi_BUS,~nHOA)))
}.play(target: ~encoder_B, addAction: \addAfter);
)

Make sure the decoder is placed after the encoder in the signal flow.

/images/spatial/sc_binaural_meter.png — Figure 2: Binaural output signal in the SC meter, signal panned hard right.

References

2017

Florian Grond and Pierre Lecomte. Higher order ambisonics for supercollider. In Linux audio conference 2017 proceedings. 2017.
[details] [BibTeX▼]

@inproceedings{grond2017higher_2,
    author = "Grond, Florian and Lecomte, Pierre",
    booktitle = "Linux audio conference 2017 proceedings",
    title = "Higher Order Ambisonics for SuperCollider",
    year = "2017"
}