Method and apparatus for adaptively encoding and decoding...

Details Method and apparatus for adaptively encoding and decoding... Method and apparatus for adaptively encoding and decoding...

2011-08-30

2011-08-30

Azad, Abul (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S226000, C704S219000

Reexamination Certificate

active

08010352

ABSTRACT:
Provided are a method and apparatus for encoding and decoding an audio signal. According to the present application, a signal of a high frequency band above a preset frequency band is adaptively encoded or decoded in the time domain or in the frequency domain by using a signal of a low frequency band below the preset frequency band. As such, the sound quality of a high frequency signal is not deteriorate even when an audio signal is encoded or decoded by using a small number of bits and thus coding efficiency may be maximized.

REFERENCES:
patent: 6427135 (2002-07-01), Miseki et al.
patent: 2003/0195742 (2003-10-01), Tsushima et al.
patent: 2007/0299669 (2007-12-01), Ehara

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