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METHOD AND APPARATUS FOR DECODING AN AMBISONICS REPRESENTATION OF A 2- OR 3-DIMENSIONAL SOUND FIELD
METHOD AND APPARATUS FOR DECODING AN AMBISONICS REPRESENTATION OF A 2- OR 3-DIMENSIONAL SOUND FIELD
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机译:用于解码2-或三维声场的ambisonics表示的方法和装置
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摘要
Representations of spatial audio scenes using higher-order Ambisonics (HOA) technology typically require a large number of coefficients per time instant. This data rate is too high for most practical applications that require real-time transmission of audio signals. According to the invention, the compression is carried out in spatial domain instead of HOA domain. The (N+1)2 input HOA coefficients are transformed into (N+1)2 equivalent signals in spatial domain, and the resulting (N+1)2 time-domain signals are input to a bank of parallel perceptual codecs. At decoder side, the individual spatial-domain signals are decoded, and the spatial-domain coefficients are transformed back into HOA domain in order to recover the original HOA representation.
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