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:
Sep. 25, 2007
Filed:
Aug. 05, 2002
Christopher Combest, Overland Park, KS (US);
John Koval, Santa Ana, CA (US);
Christopher Combest, Overland Park, KS (US);
John Koval, Santa Ana, CA (US);
Multi Service Corporation, Overland Park, KS (US);
Abstract
An excursion limiter () broadly comprises a voltage controlled filter () to suppress an audio signal according to a selected threshold at a selected frequency using a control voltage. The voltage controlled filter () preferably produces an inversion signal at the frequency, amplifies the inversion signal according to the control voltage to produce a suppression signal, and combines the audio signal with the suppression signal, thus suppressing the audio signal at the frequency and creating a resultant signal. A control voltage generator () preferably generates the control voltage using a frequency compensation filter (), a full-wave rectifier (), a precision half-wave rectifier () and a non-linear compensator (). The frequency compensation filter () isolates an initial component which is rectified by the full-wave rectifier (), shifted, and rectified again at the precision rectifier () before being essentially flattened in a non-linear manner by the non-linear compensator ().