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Method and apparatus for improving the encoding of side information needed to encode higher order ambisonics representations of sound fields
Method and apparatus for improving the encoding of side information needed to encode higher order ambisonics representations of sound fields
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机译:用于改进对声场的高阶混音表示进行编码所需的辅助信息的编码的方法和装置
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摘要
Higher Order Ambisonics represents three-dimensional sound independent of a specific loudspeaker set-up. However, transmission of an HOA representation results in a very high bit rate. Therefore compression with a fixed number of channels is used, in which directional and ambient signal components are processed differently. For coding, portions of the original HOA representation are predicted from the directional signal components. This prediction provides side information which is required for a corresponding decoding. By using some additional specific purpose bits, a known side information coding processing is improved in that the required number of bits for coding that side information is reduced on average.
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