61
Philip Nicholas Cuthbertson Hill, Christopher James Pickard: Audio signal processing. Nixon & Vanderhye P C, February 3, 1998: US05715318 (27 worldwide citation)

An audio signal processing system in which a visual display (15) is arranged to provide a visual representation (16) of a sound generating device (111) a notional listening position and a space in which a perceivable sound source may be located. A visual characteristic of the displayed space is modi ...


62
Duane H Cooper, Jerald L Bauck: Head diffraction compensated stereo system. Welsh & Katz, January 9, 1990: US04893342 (27 worldwide citation)

A stereo audio processing system for a stereo audio signal processing reproduction that provides improved source imaging and simulation of desired listening environment acoustics while retaining relative independence of listener movement. The system first utilizes a synthetic or artificial head micr ...


63
Tanaka Yoshiaki, Ueno Shoji, Fuchigami Norihiko: Audio signal processing apparatus. Victor Company of Japan, May 17, 2000: EP1001549-A2 (27 worldwide citation)

An audio signal encoding apparatus includes a device for compressing multiple-channel digital audio signals into compression-resultant multiple-channel signals respectively. The multiple-channel digital audio signals relate to a sampling frequency and a quantization bit number. The compression-resul ...


64
Aarts Ronaldus M C O Int Octro: Speech signal discrimination arrangement and audio device including such an arrangement.. Philips Electronics, February 1, 1995: EP0637011-A1 (26 worldwide citation)

A speech signal discrimination arrangement (70) has an input (1) for receiving an audio signal and an output (5) for supplying a probability indication signal VP which is indicative of the probability that the audio signal received via the input (1) is a speech signal. An analyzing circuit (2) deriv ...


65
Norihiko Fuchigami, Shoji Ueno, Yoshiaki Tanaka: Audio signal processing apparatus. Victor Company of Japan, Louis Woo, October 8, 2002: US06463410 (26 worldwide citation)

In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a differe ...


66
James M Kirsch, Ajay Iyer, Richard Allen Kreifeldt: Approach for partially preserving music in the presence of intelligible speech. HARMAN INTERNATIONAL, Artegis Law Group, April 4, 2017: US09615170 (25 worldwide citation)

An audio processing system for a listening device includes an input device, a voice activity detector and a ratio-based attenuator. The input device is configured to receive a first audio signal emanating from an environment and including a signal of interest. The voice activity detector is configur ...


67
Alan Jeffrey Seefeldt: Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal. Dolby Laboratories Licensing Corporation, June 12, 2012: US08199933 (24 worldwide citation)

Audio signal processing relating to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal is useful, for example, in one or more of: loudness-compensating volume control, automatic gain control, dynamic range control (including, for exam ...


68
Anthony Bongiovi: System for and method of audio signal processing for presentation in a high-noise environment. Sheppard Mullin Richter & Hampton, September 25, 2007: US07274795 (24 worldwide citation)

The present invention relates to novel systems, methods, and circuits useful for achieving quality sound presentation in high-noise environments. Specifically, the present invention provides systems, methods, and circuits for processing audio signals. The present invention further provides methods f ...


69
Timothy J Van Hook, Howard H Cheng, Anthony P DeLaurier, Carroll P Gossett, Robert J Moore, Stephen J Shepard, Harold S Anderson, John Princen, Jeffrey C Doughty, Nathan F Pooley, Byron Sheppard, Genyo Takeda, Shuhei Kato: High performance low cost video game system with coprocessor providing high speed efficient 3D graphics and digital audio signal processing. Nintendo, Silicon Graphics, Nixon & Vanderhye P C, July 15, 2003: US06593929 (24 worldwide citation)

A low cost high performance three dimensional (3D) graphics system is disclosed that can model a world in three dimensions and project the model onto a two dimensional viewing plane selected based on a changeable viewpoint. The viewpoint can be changed on an interactive, real time basis by operating ...


70
Mark R Anderson, John A Andrews: Supply voltage responsive audible transient (POP) suppression arrangement. Thomson Consumer Electronics, Joseph S Tripoli, Peter M Emanuel, March 30, 1993: US05199079 (24 worldwide citation)

An audio signal processing channel includes a bias network for deriving a bias voltage which is coupled to a point within the channel from the supply voltage. In order to inhibit audible transients or "pops" due to the rapid reduction of the bias voltage when the voltage supply is deenergized, a dio ...