Method of generating a correction function for an...

H - Electricity – 03 – H

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H03H 11/04 (2006.01)

Patent

CA 2110218

In a method of generating a correction function for an elimination of phase and amplitude errors of a compressed signal a reference function (hi(t)) is generated in accordance with patent application P 41 17 849.1-35 and a reference function (hf(t)) is generated by the optimum filter theory. Furthermore, the reference functions (hi(t) and hf(t)) of the ideal filter or optimum filter are fourier-transformed; the reciprocal value (1/Hf) of the one fourier-transformed signal (Hf) is multiplied by the other fourier-transformed signal (Hi), and the signal (Hi/Hf) obtained by the multiplication is subjected to an inverse fourier transformation for generating a correction function (hcorr(t)) in the time domain.

L'invention est une méthode de génération de fonctions de correction servant à éliminer les erreurs de phase et d'amplitude dans un signal comprimé dans laquelle une fonction de référence (hi(t)) est engendrée selon les spécifications de la demande de brevet P 41 17 849.1-35 et une autre fonction de référence (hf(t)) est engendrée selon les spécifications de la théorie des filtres optimaux. Les fonctions de référence du filtre idéal et du filtre optimal (hi(t) et hf(t)) sont soumises à des transformations de Fourier; l'inverse (1/Hf) de la transformée de Fourier de l'un des signaux (Hf) est multiplié par la transformée de Fourier de l'autre signal (Hi) et le signal obtenu par cette multiplication (Hi/Hf) est soumis à une transformation de Fourier inverse pour donner la fonction de correction (hcorr(t)) dans le domaine temporel.

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