Method and apparatus for non-overlapped transforming of an...

Details Method and apparatus for non-overlapped transforming of an... Method and apparatus for non-overlapped transforming of an...

2005-12-07

2011-12-27

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704SE19010, C704SE19012, C704S500000, C704S501000

Reexamination Certificate

active

08086446

ABSTRACT:
A method and apparatus for transforming an audio signal, a method and apparatus for adaptively encoding an audio signal, a method and apparatus for inversely transforming an audio signal, and a method and apparatus for adaptively decoding an audio signal. The method of transforming an audio signal includes determining a transform unit into which the audio signal in a time domain is to be transformed into an audio signal in a frequency domain, and transforming the audio signal into an audio signal in the frequency domain according to the determined transform units using a window coefficient other than 0. Accordingly, it is possible to minimize distortion of the audio signal when encoding the audio signal even at a high bit rate while increasing efficiency of compression.

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