Spectral enhancing method and device

Details Spectral enhancing method and device Spectral enhancing method and device

2001-04-12

2010-06-22

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

With content reduction encoding

C704S200000, C704S200100, C704S500000

Reexamination Certificate

active

07742927

ABSTRACT:
The present invention relates to a spectral enhancement method and to an apparatus carrying out this method. The method of the invention enhanced the spectral content of a signal having an incomplete spectrum including a first spectral frequency band, the method comprising the following stages:at least one spectral content transposition of said first frequency band into a second spectral frequency band not included in said spectrum for the purpose of generating a transposed spectrum signal having a spectrum limited to said second spectral frequency band,shaping the spectrum of the transposed spectrum signal for the purpose of producing an enhanced signal,combining an incomplete spectrum signal and the enhanced signal for the purpose of producing an enhanced spectrum signal,characterized in thatsaid spectral content is subject to a stage of whitening.

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