1
Timothy J Shuttleworth, Richard A Kreifeldt, C Rex Reed, Brian R Ellison: Ambient noise sound level compensation. Harman International Industries Incorporated, Brinks Hofer Gilson & Lione, February 19, 2008: US07333618 (31 worldwide citation)

Systems and methods for ambient noise compensation are disclosed. One example of a system includes a variable amplifier, a source sound processor, an area sound processor, and an adjustment circuit. The variable amplifier adjusts an audio input signal to generate an audio output signal with an appro ...


2
Robin M Urry, Roger T Johnsen, Richard A Kreifeldt: Analog to digital conversion system that enables high-level signal excursions without clipping. Harman Music Group, Thorpe North & Western, February 27, 2001: US06195029 (6 worldwide citation)

A method and apparatus for combining analog and digital processing techniques to thereby capture a much wider dynamic range of an original input signal than an A/D converter can by itself, to thereby preserve a maximum amount of information from the original input signal, wherein a processing amplif ...


3
Adam Holladay, Richard A Kreifeldt, Gregory Matthew Nelson, Spencer Warren George: Networked audio/video system. Harman International Industries Incorporated, Alleman Hall McCoy Russell & Tuttle, November 17, 2015: US09191721 (4 worldwide citation)

A system for configuring an audio/video (AV) system includes a computing device having a processor to enable a user, with a user interface of the computing device, to configure the AV system. The processor may enable the user to draw output zones to create a representation of a geographical layout o ...


4
Adam Holladay, Richard A Kreifeldt, Gregory Matthew Nelson, Spencer Warren George: System for automated generation of audio/video control interfaces. Harman International Industries Incorporated, Alleman Hall McCoy Russell & Tuttle, January 20, 2015: US08938675 (4 worldwide citation)

A system for automating generation of an audio/video (AV) control interface includes a computing device having a processor to enable a user, with a user interface of the computing device, to configure the AV system. The processor may enable the user to draw output zones to create a representation of ...


5
Richard A Kreifeldt, Curtis R Reed, Aaron M Hammond: Audio feedback processing system. Harman International Industries Incorporated, October 13, 2009: US07602925 (4 worldwide citation)

A signal processing system improves signal quality by accurately locating and eliminating a feedback signal in an input signal, such as an audio signal. The signal processing system interpolates between frequency sample points to obtain a more accurate identification of a feedback signal frequency. ...


6
Richard A Kreifeldt, Curtis R Reed, Aaron M Hammond: Audio feedback processing system. Harman International Industries Incorporated, Brinks Hofer Gilson & Lione, April 10, 2007: US07203324 (2 worldwide citation)

This invention is an audio system capable of identifying frequencies of feedback signals and filters these feedback signals. Frequency interpolation is utilized on a sampled frequency spectrum signal corresponding to a feedback signal, where the frequency interpolation allows the frequency of the fe ...


7
Timothy J Shuttleworth, Richard A Kreifeldt, C Rex Reed, Brian R Ellison: Ambient noise sound level compensation. Harman International Industries Incorporated, August 23, 2011: US08005231 (2 worldwide citation)

A system includes a variable amplifier, a source sound processor, an area sound processor, and an adjustment circuit. The variable amplifier adjusts an audio input signal to generate an audio output signal with an appropriate level so that the audio output signal is audible over noise in a listening ...


8
Adam Holladay, Richard A Kreifeldt, Brian Pickowitz, Paul Bauman: System for configuration and management of live sound system. Harman International, Brooks Kushman P C, May 23, 2017: US09661428

A computing system automates the configuration and management of a live sound system that includes a processor and memory for building in a GUI of a display a representation of the live sound system for a venue. The system loads a venue template that includes loudspeaker arrays and related propertie ...


9
Adam Holladay, Richard A Kreifeldt, Brian Pickowitz, Paul Bauman: System for networked routing of audio in a live sound system. HARMAN INTERNATIONAL INDUSTRIES INCORPORATED, Brooks Kushman P C, November 21, 2017: US09826325

A system to automate networked routing of audio in a live sound system includes a computing device having a processor and memory and in which the system is configurable for a venue. The memory includes instructions executable by the processor to route audio signals over a network based on user selec ...


10
Richard A Kreifeldt, Ajay Iyer: Adaptive detector and auto mode for dynamics processor. Harman International Industries Incorporated, Brooks Kushman P C, February 20, 2018: US09900689

A dynamic processor for compressing an incoming audio signal is provided. The processor includes an adaptive detector, an adaptive module, and an amplifier. The adaptive detector includes a first adaptive filter and is configured to apply a transfer function to the incoming audio signal to generate ...