Selecting codebooks for coding vectors decomposed from higher-order ambisonic audio signals

A device comprising:

• means for storing a plurality of codebooks to use when performing vector dequantization with respect to a vector quantized spatial component of a soundfield, the vector quantized spatial component defined in a spherical harmonic domain, and obtained through application of a decomposition to a plurality of higher order ambisonic coefficients;
• means for selecting one of the plurality of codebooks
• means for performing vector dequantization with respect to the vector quantized spatial component using the selected one of the plurality of codebooks to obtain a vector dequantized spatial component of the soundfield;
• means for rendering, based on the vector dequantized spatial component, speaker feeds.

A device comprising:

• a memory configured to store a plurality of codebooks to use when performing vector quantization with respect to a spatial component of a soundfield, the spatial component defined in a spherical harmonic domain, and obtained through application of a decomposition to the plurality of higher order ambisonic coefficients;
• and
• one or more processors coupled to the memory, and configured to:
• select one of the plurality of codebooks;
• perform vector quantization with respect to the spatial component using the selected one of the plurality of codebooks to obtain a vector quantized spatial component of the soundfield;
• and
• generate a bitstream to include the vector quantized spatial component.