Method and system for spatial audio processing using multiple orders of ambisonics

An electronic device, comprising:

• at least one processor;
• and
• memory having instructions stored therein which when executed by the at least one processor causes the electronic device to:
• receive a higher-order ambisonics (HOA) representation of a sound field that includes a first plurality of audio signals;
• extract a second plurality of audio signals from the first plurality of audio signals, wherein the second plurality of audio signals are of a first-order ambisonics (FOA) representation of the sound field;
• determine a plurality of adaptive filters based on at least some of the second plurality of audio signals;
• produce a plurality of output audio signals based on the first plurality of audio signals and the plurality of adaptive filters, each output audio signal having at least a portion of the sound field;
• and
• drive a plurality of speakers using the plurality of output audio signals.

A processor of an electronic device configured to:

• extract a first-order ambisonics (FOA) signal from a higher-order ambisonics (HOA) signal;
• perform non-parametric spatial audio rendering upon the HOA signal to produce a plurality of spatially rendered audio signals;
• perform parametric spatial audio processing upon the FOA signal to estimate one or more adaptive filters;
• produce a plurality of output audio signals by applying the one or more adaptive filters upon the plurality of spatially rendered audio signals;
• and
• cause a plurality of speakers to playback the plurality of output audio signals.