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US 2003/0158726 A1Published application
Spectral enhancing method and device
AssigneesFrance Telecom, Telediffusion de France
InventorsPierrick Philippe, Patrice Collen
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AssigneesFrance Telecom, Telediffusion de France
InventorsPierrick Philippe, Patrice Collen
Estimating the term…
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 that said spectral content is subject to a stage of whitening.
A method for enhancing a signal's spectral content, where this signal comprises an incomplete spectrum which does include a first spectral frequency band, said method comprising the following steps:
Spectral content enhancement method as claimed in one of the above claims, characterized in that the spectral content whitening is implemented by filtering the incomplete-spectrum signal through a whitening filter.
Dependencies are inferred from the claim text.