1. A method of decoding a bitstream indicative of a plurality of higher-order ambisonic (HOA) coefficients representative of a soundfield, the method comprising: obtaining, by an audio decoding device, the bitstream, wherein the bitstream includes a syntax element identifying whether the vector quantization or the scalar quantization was performed; performing, by the audio decoding device and based on the syntax element identifying whether the vector quantization or the scalar quantization was performed, either vector dequantization or scalar dequantization with respect to a spatial component defined in a spherical harmonic domain; reconstructing, by the audio decoding device, the plurality of HOA coefficients based on the dequantized spatial component; rendering, by the audio decoding device, one or more loudspeaker feeds based on the reconstructed plurality of HOA coefficients; and reproducing, by one or more loudspeakers coupled to the audio decoding device, the soundfield based on the one or more loudspeaker feeds.