FIELD: computer equipment for processing audio data.
SUBSTANCE: technical result is achieved by determining the IPD parameter encoding scheme for the current frame, based on the reference parameter, wherein the determined IPD parameter encoding scheme for the current frame is one of two specified IPD parameter encoding schemes, and two predetermined IPD parameter encoding schemes comprise a first encoding scheme and a second encoding scheme; processing IPD parameter for current frame, based on the determined IPD parameter encoding scheme for the current frame; and encoding a bit of the flag of the encoding scheme to indicate the determined encoding scheme of the IPD parameter, wherein when the IPD coding scheme flag bit value is 1, the coding scheme flag bit indicates that the IPD parameter coding scheme of the current frame is the first coding scheme, and when the IPD coding scheme flag bit value is equal to 0, the coding scheme flag bit indicates that the IPD parameter coding scheme of the current frame is the second coding scheme.
EFFECT: high accuracy of phase information for encoding audio data.
15 cl, 9 dwg
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