Electrical audio signal processing systems and devices – Including frequency control – Having automatic equalizer circuit
Reexamination Certificate
2007-09-04
2007-09-04
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Including frequency control
Having automatic equalizer circuit
C381S098000, C381S101000, C381S102000, C333S02800T, C702S196000
Reexamination Certificate
active
10341812
ABSTRACT:
A method for use with equipment having filters, the method characterized by multiplying a matrix having a specified cut-boost setting of a filter of a graphic equalizer by a correction matrix to create a matrix having a corrected cut-boost setting of the filter of the graphic equalizer; adjusting an actual cut-boost setting of the filter of the graphic equalizer to be substantially equal to the corrected cut-boost setting of the filter of the graphic equalizer; and configuring the filter to have a Q value substantially equal to a linearizing Q value. In addition to the foregoing, other method embodiments are described in the claims, drawings, and text forming a part of the present application. In one or more various embodiments, related systems include but are not limited to circuitry and/or programming for effecting the foregoing-referenced method embodiments; the circuitry and/or programming can be virtually any combination of hardware, software, and/or firmware configured to effect the foregoing-referenced method embodiments depending upon the design choices of the system designer.
REFERENCES:
patent: 4939782 (1990-07-01), Gambacurta, Jr. et al.
patent: 5687104 (1997-11-01), Lane et al.
“Graphic Equalizers 30GE-1 30GE-2,” TDM Design, Inc., Hillsboro, OR, date unknown.
“An Amazing Advancement Makes This Graphic Equalizer Unique,” t.c. electronic of Denmark, Denmark, circa 1996.
Dr. -Ing. Seyed-Ali Azizi “Audio Engineering Society Convention Paper 5482: A new Concept of Interference Compensation for Parametric and Graphic Equalizer Banks,” 111th Convention of the Audio Engineering Society, New York, New York, Sep. 21-24, 2001, pp. 1-8.
Chin Vivian
Jablonski Kevin D.
Rane Corporation
Suthers Douglas
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