The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 06, 2014
Filed:
Jul. 05, 2011
Alexis B. Allegra, La Jolla, CA (US);
Robert W. Lowdermilk, San Diego, CA (US);
Dragan Vuletic, San Diego, CA (US);
Fredric J. Harris, Lemon Grove, CA (US);
Alexis B. Allegra, La Jolla, CA (US);
Robert W. Lowdermilk, San Diego, CA (US);
Dragan Vuletic, San Diego, CA (US);
Fredric J. Harris, Lemon Grove, CA (US);
BAE Systems National Security Solutions Inc., McLean, VA (US);
Abstract
A system and method for filtering an input signal with at least a first and a second octave portions is presented. A proportional bandwidth filter system includes a bandwidth reducing filter, a down-sampler, and first and second octave filters. The bandwidth reducing filter reduces the bandwidth of the input signal and the down-sampler rolls the second octave portion represented in the reduced bandwidth signal to a top octave portion of a down-sampled signal. The first and second octave filters are comprised of a plurality of proportional bandwidth filters. The first octave filter partitions and converts the first octave portion of the input signal into output signals representing the frequency spectra of the first octave of the input signal. Similarly, the second octave filter generates outputs representing the spectra of the second octave portion of the input signal represented as the top octave portion of a down-sampled signal.