Information signal processing by carrying out modification...

G - Physics – 06 – F

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G06F 17/14 (2006.01) G10L 19/02 (2006.01) G10L 21/02 (2006.01) H04N 7/30 (2006.01)

Patent

CA 2564970

A specific processing of information signals that is separate according to modulation portions and carrier portions is made possible by an arrangement for processing an information signal (14). The arrangement comprises a device (20) for converting the information signal (14) into a time/spectral representation by a block-by-block transformation of the information signal, and comprises a device (22) for converting the information signal of the time/spectral representation into a spectral/modulation spectral representation. This device (22) for converting is designed in such a manner that the spectral/modulation spectral representation is dependent on both an amount portion as well as on a phase portion of the time/spectral representation of the information signal (14). A device (24, 40) then carries out a manipulation or modification of the information signal (14) in the spectral/modulation spectral representation in order to obtain a modified spectral/modulation spectral representation. Another device (26) forms, in the end, a processed information signal (18) that represents a processed version of the information signal (14) based on the modified spectral/modulation spectral representation.

L'invention concerne un système prévu pour traiter un signal d'information¿u? (14), qui permet un traitement ciblé de signaux d'information, réparti par composantes de modulation et composantes de porteuses. Ledit système comprend un dispositif¿u? (20) pour convertir le signal d'information¿u? (14) en une représentation temporelle/spectrale, par transformation par blocs du signal d'information, ainsi qu'un dispositif¿u? (22) pour convertir le signal d'information de la représentation temporelle/spectrale en une représentation spectrale/spectrale de modulation. Le dispositif¿u? (22) de conversion se présente de manière que la représentation spectrale/spectrale de modulation dépende aussi bien d'une composante de valeur qu'une composante de phase de la représentation temporelle/spectrale du signal d'information¿u? (14). Un dispositif¿u? (24, 40) procède alors à une manipulation ou à une modification du signal d'information¿u? (14) dans la représentation spectrale/spectrale de modification, afin d'obtenir une représentation spectrale/spectrale d modulation modifiée. Un autre dispositif¿u? (26) forme finalement un signal d'information¿u? traité (18), qui représente une version traitée du signal d'information¿u? (14), sur la base de la représentation spectrale/spectrale de modulation modifiée.

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