System and method for efficient upsampled signal processing

Details System and method for efficient upsampled signal processing System and method for efficient upsampled signal processing

2007-04-17

2007-04-17

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

C341S155000

Reexamination Certificate

active

11262424

ABSTRACT:
A system and method for efficiently upsampling and filtering a signal is provided. The system includes a controller216and an upsampler202capable of upsampling a digitized signal. The upsampler202converts a digitized signal having a first sampled frequency into a digitized signal having a second sampled frequency by inserting, for example, at least one zero between the samples of the digitized signal. A plurality of filters205–208is coupled to the upsampler. These filters, which may be band-pass filters, would be suitable for front end encoding in audio-based applications. The controller216adjusts at least one output of the plurality of the filters to zero, either by deactivation or forcing the filter to zero, based upon a predetermined characteristic of the digitized signal. One example of a predetermined characteristic is a maximum frequency of interest.

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patent: 6988116 (2006-01-01), Corless et al.

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