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Peter Chaikin, Geoffrey Christopherson, Brian Ellison, John Lee, Miguel Paganini, C Rex Reed, Timothy Shuttleworth, Gregory Wright: Self-calibrating loudspeaker system. Harman International Industries Incorporated, Brinks Hofer Gilson & Lione, November 5, 2013: US08577048 (93 worldwide citation)

Systems and methods for calibrating a loudspeaker with a connection to a microphone located at a listening area in a room. The loudspeaker includes self-calibration functions to adjust speaker characteristics according to effects generated by operating the loudspeaker in the room. In one example, th ...


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Peter Chaikin, Geoffrey Christopherson, Brian Ellison, John Lee, Miguel Paganini, C Rex Reed, Timothy Shuttleworth, Gregory Wright: Self-calibration loudspeaker system. Harman International Industries Incorporated, Brooks Kushman P C, January 31, 2017: US09560460 (22 worldwide citation)

Systems and methods for calibrating a loudspeaker with a connection to a microphone located at a listening area in a room. The loudspeaker includes self-calibration functions to adjust speaker characteristics according to effects generated by operating the loudspeaker in the room. In one example, th ...


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Sunil Bharitkar, Timothy Shuttleworth: System and method for varying low audio frequencies inversely with audio signal level. Harman International, March 21, 2006: US07016509 (13 worldwide citation)

The present invention relates to an auto loudness circuit for performing loudness compensation automatically depending on the signal level. When the signal level decreases, loudness compensation is slowly introduced and as the signal level increases, loudness compensation is quickly removed. To do s ...


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Richard Allen Kreifeldt, Timothy Shuttleworth, Curtis Rex Reed: System for automatic compensation of low frequency audio based on human loudness perceptual models. Harman International Industries Incorporated, The Eclipse Group, November 8, 2011: US08054993 (3 worldwide citation)

A system for boosting the bass of an audio signal to closely match or mirrors a plurality of Robinson-Dadson loudness curves by interpolating coefficients from a table of values representing the Robinson-Dadson loudness. The system having a controller that interpolates the coefficients from the loud ...


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Timothy Shuttleworth: Clock system capable of synchronizing clock frequencies of power processing devices and digital signal processing devices. Harman International, May 9, 2006: US07043313 (1 worldwide citation)

The present invention synchronizes the clock of the power processing devices and digital signal processing devices in an audio system. The system may include a clock, a digital signal processor (DSP), and a pulse width modulated (PWM) power processing device wherein the digital signal processor and ...


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Timothy Shuttleworth: Self-diagnostic system for monitoring electrical equipment. Harman International Industries Incorporated, January 3, 2012: US08090112

This invention relates to a self-diagnostic audio system including a digital signal processor (DSP) that monitors a plurality of electronic components in an audio system, such as an amplifier, speaker, memory, power supply, and DSP itself. The DSP may monitor various information from each of the ele ...


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Timothy Shuttleworth: Method, apparatus, and system for analysis, evaluation, measurement and control of audio dynamics processing. Heed Law Group, Thomas P Heed, June 26, 2018: US10008998

A method, apparatus, and system for measuring and analyzing the effects of dynamics modifying processors on a signal. This new approach utilizes statistical analysis techniques to provide a direct comparison and evaluation between the processed signal and the unprocessed signal's dynamic characteris ...


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Timothy Shuttleworth: Self-diagnostic system for monitoring electrical equipment. Squire Sanders & Dempsey, June 13, 2002: US20020071568-A1

This invention relates to a self-diagnostic audio system including a digital signal processor (DSP) that monitors a plurality of electronic components in an audio system, such as an amplifier, speaker, memory, power supply, and DSP itself. The DSP may monitor various information from each of the ele ...