41
Robert L Brennan, Edward Chau, Hamid Sheikhzadeh Nadjar, Todd Schneider: Directional audio signal processing using an oversampled filterbank. DSPFactory, Daniel J Santos, April 15, 2008: US07359520 (29 worldwide citation)

A directional signal processing system for beamforming information signals. The system includes an oversampled filterbank, which has an analysis filterbank for transforming the information signals in time domain into channel signals in transform domain, a synthesis filterbank and a signal processor. ...


42
Oh Eun Mi, Kim Sang Wook, Lee Sang Jo, Kim Mi Young: Apparatus and method for processing audio signal and computer readable recording medium storing computer program for the method. Samsung Electronics, September 8, 2004: EP1455504-A2 (29 worldwide citation)

An audio signal processing apparatus and method and a computer readable recording medium storing a computer program for the method are provided. The audio signal processing apparatus includes: an input unit that receives the audio signal; and a signal processing unit that processes the audio signal ...


43
Seefeldt Alan Jeffrey: Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal. Dolby Laboratories Licensing Corporation, Seefeldt Alan Jeffrey, GALLAGHER Thomas A, October 25, 2007: WO/2007/120453 (29 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 ...


44
Duane H Cooper, Jerald L Bauck: Head diffraction compensated stereo system with optimal equalization. Welsh & Katz, December 4, 1990: US04975954 (28 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 ...


45
Duane H Cooper, Jerald L Bauck: Head diffraction compensated stereo system. Welsh & Katz, July 23, 1991: US05034983 (28 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 ...


46
Leopold Neumann: Audio signal processing circuit for use in a hearing aid and method for operating same. Analogic Corporation, David W Gomes, July 14, 1987: US04680798 (28 worldwide citation)

In a hearing aid of the type having an electrical amplifier, wherein the improvement provides an audio signal processing circuit incorporated into the amplifier and including integral computing circuitry for controlling the operation thereof; the processing circuit providing circuitry for receiving ...


47
Dijkstra Evert, Hautier Olivier, Destrez Nicolas: System and method for separation of a users voice from ambient sound. Phonak, March 29, 2006: EP1640972-A1 (28 worldwide citation)

The invention relates to a system for separation of a user's voice from ambient sound, comprising a device (10) to be wom at the user's ear or at least partly in the user's ear canal (12) comprising a first microphone (M1) oriented outwardly towards the environment and a second microphone (M2) orien ...


48
Duane H Cooper, Jerald L Bauck: Head diffraction compensated stereo system. Welsh & Katz, August 4, 1992: US05136651 (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 ...


49
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 ...


50
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 ...



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