Sample rate conversion combined with filter

Details Sample rate conversion combined with filter Sample rate conversion combined with filter

2007-08-28

2007-08-28

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

C341S060000

Reexamination Certificate

active

11387093

ABSTRACT:
Digital filtering and sample rate conversion blocks are combined in order to reduce hardware and/or computational complexity. Input data samples provided at a first sample rate are converted to output data samples at a second sample rate unequal to the first sample rate. An Infinite Impulse Response filter having internal states are updated at the first sample rate filters the input data samples in, to produce filtered data samples at the first sample rate. Output data samples are output at the second sample rate, where each output data sample is created as the sum of at least two intermediate products, a first intermediate product and a second intermediate product. The first intermediate product is defined by a first function of the internal states multiplied by a first function of the time difference between output samples and internal state updates, and the second intermediate product is defined by a second function of the internal states multiplied by a second function of the time difference between output samples and internal state updates.

REFERENCES:
patent: 5500874 (1996-03-01), Terrell
patent: 5815102 (1998-09-01), Melanson
patent: 5944775 (1999-08-01), Satoshi
patent: 6150969 (2000-11-01), Melanson
patent: 6215429 (2001-04-01), Fischer et al.
patent: 6480129 (2002-11-01), Melanson
patent: 7129861 (2006-10-01), Avantaggiati
“Design of IIR Filters” (Samir V. Ginde & Joseph A.N. Noronha), Virginia Polytechnic and State University, (www.ee.vt.edu/˜jnoronha/dsp—proj2—report.pdf), undated.
“Infinite Impulse Response”(http://en.wikipedia.org/wiki/Infinite—impulse—response) from Wikipedia, the free encyclopedia, undated.

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