FIELD: physics.
SUBSTANCE: invention relates to computer engineering for processing audio data. Technical result is achieved by steps of: filtering the decoded audio signal in the low frequency band to generate a filtered audio signal in the low frequency band; and regenerating a portion of the high-frequency band of the audio signal using the filtered audio signal in the low-frequency band and high-frequency reconstruction metadata, wherein said regeneration includes spectral transfer, if patch insertion mode parameter has a first value, and said regeneration includes harmonic transposition by spreading the frequency of the phase vocoder if the patch insertion mode parameter has a second value.
EFFECT: high quality of replicating the spectral range of audio data.
8 cl, 7 dwg, 4 tbl
Title |
Year |
Author |
Number |
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2019 |
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|
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|
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2016 |
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|
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2016 |
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|
RU2760700C2 |
DECODING OF AUDIO BIT STREAMS WITH SPECTRAL BAND EXTENDED COPY METADATA IN AT LEAST ONE FILLING ELEMENT |
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|
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|
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2016 |
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|
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2019 |
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|
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2019 |
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|
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2012 |
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|
RU2575390C2 |