1
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 (26 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 ...


2
Klaus Hartung: Calibration using multiple recording devices. Sonos, McDonnell Boehnen Hulbert & Berghoff, August 22, 2017: US09743207 (11 worldwide citation)

Example techniques may involve calibration with multiple recording devices. An implementation may include detecting, via a microphone, one or more calibration sounds as emitted by one or more playback devices of one or more zones during a calibration sequence. The implementation may further include ...


3
Dayn Wilberding, Neil Griffiths: Calibration state variable. Sonos, McDonnell Boehnen Hulbert & Berghoff, October 10, 2017: US09788113 (9 worldwide citation)

An example implementation may involve receiving, via a network interface, an indication that the first playback device is calibrated. The implementation may also involve updating a calibration state variable to indicate that the first playback device is calibrated based on receiving the indication t ...


4
Timothy Sheen, Dayn Wilberding: Speaker calibration. Sonos, McDonnell Boehnen Hulbert & Berghoff, June 27, 2017: US09690271 (9 worldwide citation)

An example implementation may involve a control device displaying (i) a prompt to prepare a playback device for calibration within a given environment, (ii) a prompt to prepare the given environment for calibration of the playback device, and (iii) a prompt to prepare the control device for calibrat ...


5
Wong Hoo Sim, Boon Keat Eddy Toh, Jeng Khim Tan, Susimin Suprapmo: Sound reproduction apparatus and a method for speaker charging/calibration employed in said apparatus. Creative Technology, Creative Technology, January 28, 2014: US08638957 (5 worldwide citation)

There is provided a sound reproduction apparatus including a sub-woofer unit and a plurality of wireless speakers. A method of speaker charging and speaker calibration using the sound reproduction apparatus is also provided. The sub-woofer unit may be configured to perform tasks of both charging a p ...


6
Brett G Crockett, Spencer Hooks, Alan Seefeldt, Joshua B Lando, C Phillip Brown, Sripal S Mehta, Stewart Murrie: Reflected sound rendering for object-based audio. Dolby Laboratories Licensing Corporation, October 17, 2017: US09794718 (1 worldwide citation)

Embodiments are described for rendering spatial audio content through a system that is configured to reflect audio off of one or more surfaces of a listening environment. The system includes an array of audio drivers distributed around a room, wherein at least one driver of the array of drivers is c ...


7
Aki Sakari Harma: Method and apparatus for determining a position of a microphone. KONINKLIJKE PHILIPS, August 22, 2017: US09743211 (1 worldwide citation)

An apparatus comprises a receiver (203) receiving a multichannel signal comprising two channels for rendering by a first speaker (101) at a first position and a second speaker (103) at a second position respectively. A first signal generator (207) generates a correlated signal and a second signal ge ...


8
SIM WONG HOO: A sound reproduction apparatus and a method for speaker charging/calibration employed in said apparatus. CREATIVE TECHNOLOGY, Atmd Bird & Bird, January 27, 2011: WO/2011/010968 (1 worldwide citation)

There is provided a sound reproduction apparatus including a sub-woofer unit and a plurality of wireless speakers. A method of speaker charging and speaker calibration using the sound reproduction apparatus is also provided. The sub-woofer unit may be configured to perform tasks of both charging a p ...


9
Dayn Wilberding, Timothy Sheen: Calibration indicator. Sonos, McDonnell Boehnen Hulbert & Berghoff, May 1, 2018: US09961463

An example implementation may involve a control device receiving, from a first playback device of a media playback system, a calibration state variable indicating that the first playback device is uncalibrated. The control device may cause a graphical interface to display an indication that the firs ...


10
Jonathan Downing, Timothy Sheen, Daniel Valente: Validation of audio calibration using multi-dimensional motion check. Sonos, McDonnell Boehnen Hulbert & Berghoff, June 27, 2017: US09693165

Examples described herein involve validating motion of a microphone during calibration of a playback device. An example implementation involves receiving motion data indicating movement of a recording device while the recording device was recording a calibration sound emitted by one or more playback ...