FIELD: data processing.
SUBSTANCE: invention relates to audio data processing techniques. Audio data post processor for audio signal postprocessing, having time-variable gain information at high frequencies as auxiliary information, comprises module for extracting strips to extract a high-frequency band from audio signal and a low-frequency band from audio signal; high-frequency band processor for performing time-variable gain of the high-frequency band in accordance with the time-variable gain information at high frequencies to obtain a processed high-frequency band; combination module for combining the processed high-frequency band and the low-frequency band.
EFFECT: high efficiency of audio data processing.
64 cl, 17 dwg
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