Methods and systems for efficient filtering of digital signals

Details Methods and systems for efficient filtering of digital signals Methods and systems for efficient filtering of digital signals

H - Electricity

03

H

H03H 17/06 (2006.01) H03H 17/02 (2006.01)

Patent

CA 2473873

A method in a signal processor for filtering samples in a digital signal is provided. An approximate filtered sample is generated as a function of less than four samples of the digital signal. A correction is generated as a function of the less than four samples, and a filtered sample is generated by modifying the approximate filtered sample with the correction.

La présente invention concerne un procédé qu'on utilise dans un processeur de signal pour filtrer des échantillons d'un signal numérique. Un échantillon approximativement filtré est généré sous forme d'une fonction de moins de quatre échantillons du signal numérique. Une correction est générée sous forme d'une fonction desdits échantillons (d'un nombre inférieur à quatre) et un échantillon filtré est généré par modification de l'échantillon approximativement filtré, avec la correction.

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