G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 20/00 (2006.01) H04B 1/66 (2006.01) G10L 7/06 (1995.01) H04H 5/00 (2006.01)
Patent
CA 2090052
A method and apparatus for performing a Modified Discrete Cosine Transform on an audio signal is disclosed which utilizes a Discrete Fourier Transform. Illustratively, the MDCT spectral coefficients for the signal are generated from the real FFT spectral coefficients.
L'invention est constituée par une méthode et un appareil servant à effectuer une transformation en cosinus discrète modifiée sur un signal audio par l'intermédiaire de la transformation de Fourier discrète. Dans une illustration de la méthode de l'invention, les coefficients spectraux de la transformée en cosinus discrète modifiée du signal sont obtenus à partir des coefficients spectraux réels de la transformée de Fourier discrète.
de Sousa Ferreira Anibal Joao
Johnston James David
American Telephone And Telegraph Company
Kirby Eades Gale Baker
LandOfFree
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