Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2006-02-21
2006-02-21
Chawan, Vijay B. (Department: 2654)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S205000, C704S233000, C704S227000, C704S234000, C375S341000, C375S240000
Reexamination Certificate
active
07003451
ABSTRACT:
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilizing high frequency reconstruction (HFR). It utilizes adaptive filtering to reduce artifacts due to different tonal characteristics in different frequency ranges of an audio signal upon which HFR is performed. Tie present invention is applicable to both speech coding and natural audio coding systems.
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Ekstrand Per
Henn Fredrik
Kjörling Kristofer
Villemoes Lars
Chawan Vijay B.
Coding Technologies AB
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