LAYERED CODING AND DATA STRUCTURE FOR COMPRESSED HIGHER-ORDER AMBISONICS SOUND OR SOUND FIELD REPRESENTATIONS

摘要

This document is related to a kind of hierarchy encoding method of the frame of compression high-order ambisonics (HOA) expression of sound or sound field.Compression HOA expressions include multiple transmission signals.This method includes：Multiple transmission signals are distributed into multiple hierarchical layers, multiple hierarchical layers include Primary layer and one or more classification enhancement layers；For each layer of corresponding HOA extremely efficients load of generation, the HOA extremely efficients load include for parameterize ground enhancing from distribute to equivalent layer and transmission signal less than any layer of equivalent layer obtained by the auxiliary information of HOA expressions that reconstructs, it gives the HOA extremely efficients load distribution of generation to their corresponding layer, and the HOA extremely efficient load of generation is indicated in output bit stream.Method, the data structure for compressing the frame that HOA is represented for compressing the encoder and decoder of the hierarchical coding of HOA expressions and representing sound or sound field that this document is decoded further to a kind of frame of the compression HOA expressions to sound or sound field.