Time compression/expansion without pitch change

Details Time compression/expansion without pitch change Time compression/expansion without pitch change

H - Electricity

04

B

H04B 1/66 (2006.01) G11B 5/02 (2006.01) G11B 20/00 (2006.01) H03H 11/26 (2006.01) H04L 7/02 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2202538

An apparatus and method are disclosed for converting an input signal (10) having a frequency related information sustained over a first duration of time into an output signal (100) sustained over a second duration of time at substantially the same first frequency by adding or subtracting to the effective wavelength (113) of the output signal (100). Preferably, the signals are converted in digital form with samples added or subtracted to frequency convert the signal.

Un appareil et un procédé permettent de convertir un signal d'entrée (10), comportant des informations liées à la fréquence, correspondant à une première durée, en un signal de sortie (100) correspondant à une deuxième durée, à une fréquence sensiblement égale, par addition ou soustraction portant sur la longueur (113) d'onde efficace de ce signal de sortie (100). Ces signaux sont de préférence numérisés, et des échantillons ajoutés ou soustraits pour convertir la fréquence d'un signal à l'autre.

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