Audio coding system using spectral hole filling

Details Audio coding system using spectral hole filling Audio coding system using spectral hole filling

2002-06-17

2008-11-04

Wozniak, James S (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S500000

Reexamination Certificate

active

07447631

ABSTRACT:
Audio coding processes like quantization can cause spectral components of an encoded audio signal to be set to zero, creating spectral holes in the signal. These spectral holes can degrade the perceived quality of audio signals that are reproduced by audio coding systems. An improved decoder avoids or reduces the degradation by filling the spectral holes with synthesized spectral components. An improved encoder may also be used to realize further improvements in the decoder.

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