1
Sylvain Choisel, Geoffrey Glen Martin, Michael Hlatky: Loudspeaker position estimation. Bang & Olufsen, Stites & Harbison PLLC, Douglas E Jackson, October 2, 2012: US08279709 (91 worldwide citation)

The invention relates to an automated estimation of the position (co-ordinates) of a set of loudspeakers in a ioom Based on measured impulse responses the distances between each pair of loudspeakers are estimated, thereby forming a distance matrix, and the resultant distance matrix is used by a mult ...


2
Pedersen Jan Abildgaard: Method and apparatus for controlling the performance of a loudspeaker in a room. Bang & Olufsen, May 7, 1997: EP0772374-A2 (89 worldwide citation)

A method for controlling the performance of a loudspeaker in a room, by determining in a first acoustic environment suitable parameters defining a first complex transfer function based on a measurement of the resultant movement of a loudspeaker driver diaphragm and the associated force, arising from ...


3
Jan Abildgaard Pedersen: Method and system for adapting a loudspeaker to a listening position in a room. Bang & Olufsen, Stites & Harbison PLLC, Marvin Petry, March 27, 2012: US08144883 (85 worldwide citation)

The invention relates to a method and a system for adapting a loudspeaker to a specific listening position relative to the loudspeaker according to which method and system the acoustic power radiated by the loudspeaker is corrected by means of a correction filter inserted in the signal path through ...


4
Fredsgaard Lars, Lydolf Morten: Configuring a sound field. Bang & Olufsen, March 10, 2010: EP2161950-A2 (85 worldwide citation)

The present invention relates to a method and system for dynamic reconfiguring an audio reproduction system comprising two or more sound channels. The premises of the reconfiguring are being based on the position of one or more listeners and the one or more sound channels in the reproduction system. ...


5
Nielsen Kaj, Jensen Ole: A method and a system to adjust the acoustical performance of a loudspeaker. Bang & Olufsen, April 1, 2009: EP2043381-A2 (84 worldwide citation)

The invention relates to a method and a system for optimizing the performance of a loudspeaker system as perceived by user. The physical part of the speaker system is adjustable which enables the speaker units to be placed in positions that imply maximal acoustical performance. This is obtained by c ...


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Svend Olof Sjostrom: Apparatus for measuring cardiac signals, using acoustic and ecg signals. Bang & Olufsen Technology, Antonelli Terry Stout & Kraus, November 11, 1997: US05685317 (82 worldwide citation)

An apparatus for measuring the cardiac valve function of a person by analyzing an acoustic signal from the heart. The acoustic signal is synchronized with the electrocardiographic signal obtained from the heart. In order to improve the signal-to-noise ratio of the input electrocardiographic signal, ...


8
Pedersen Jan Abildgaard, Ploug Ole: Environment adaptable loudspeaker. Bang & Olufsen, September 19, 2001: EP1133896-A1 (75 worldwide citation)

It is known to make the performance of a loudspeaker "environment adaptive" in controlling a filter unit based on a measurement of the velocity/acceleration of the loudspeaker diaphragm and the associated sound pressure in front of the diaphragm, by means of an accelerometer and a microphone, respec ...


9
Martin Geoffrey Glen: A method and apparatus for multichannel upmixing and downmixing. Bang & Olufsen, August 29, 2007: EP1825713-A1 (75 worldwide citation)

Loudspeakers in domestic or automotive environments are rarely placed ideally with respect to the sources supplying them, and the stereo and surround images are seldom satisfying. According to the invention there is provided a method and apparatus for combining a precise knowledge about the relative ...


10
Henrik Fodgaard, Rolf Singer, Paul Erik Fabricius: Method and an apparatus for determining the content of a constituent of blood of an individual. Bang & Olufsen Technology, Bryan Cave, October 6, 1998: US05817007 (61 worldwide citation)

A method and an apparatus for determining the content of a constituent of blood of an individual are disclosed. In the method a whole blood stream is extracted from a blood vessel of said individual, the stream being directed through a path defining a substantially non-varying flow-through area wher ...