REDUCED CORRELATION BETWEEN BACKGROUND CHANNELS OF HIGH-ORDER AMBIOPHONY (HOA) Russian patent published in 2021 - IPC H04R5/04 

FIELD: acoustics.

SUBSTANCE: method for decoding ambiophonic audio data, comprising steps of on which by means of the decoding device the audio-correlated representation of ambient ambiophony of the surrounding space coefficients is obtained, which represent a background component of a sound field described by a plurality of higher-order ambiophony coefficients. Uncorrelated representation of ambiophony coefficients of ambient space is decorrelated using phase transformation, wherein at least one of a plurality of higher-order ambiophony coefficients describing the sound field is associated with a zero-order or first-order spherical basis function. Using the decoding device, an audio conversion with re-correlation to the decorrelated representation of ambiophony coefficients of the surrounding space, in order to obtain a plurality of re-correlated ambiophony coefficients of ambient space.

EFFECT: technical result is improved presentation of sound.

38 cl, 2 tbl, 7 dwg