Global Patent Index - EP 0772374 B1

EP 0772374 B1 20081008 - Method and apparatus for controlling the performance of a loudspeaker in a room

Title (en)

Method and apparatus for controlling the performance of a loudspeaker in a room

Title (de)

Verfahren und Vorrichtung zur Leistungsregelung eines Lautsprechers in einem Raum

Title (fr)

Procédé et appareil pour contrôler la performance d'un haut-parleur dans une salle

Publication

EP 0772374 B1 20081008 (EN)

Application

EP 96203005 A 19961029

Priority

DK 112495 A 19951102

Abstract (en)

[origin: EP0772374A2] 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 the sound field in the room, acting on it, and in a second acoustic environment the same or different parameters of a second complex transfer function by measuring the loudspeaker driver relating to the room. The ratio between the real parts of the first and second transfer functions is used to define the performance of a correcting filter, included in the signal chain to the loudspeaker driver.

IPC 8 full level

H04R 3/04 (2006.01); H04R 3/00 (2006.01); H04R 29/00 (2006.01); H04S 7/00 (2006.01)

CPC (source: EP)

H04R 3/002 (2013.01); H04R 3/04 (2013.01); H04S 7/301 (2013.01); H04R 29/001 (2013.01); H04S 7/305 (2013.01)

Designated contracting state (EPC)

DE DK FR GB

DOCDB simple family (publication)

EP 0772374 A2 19970507; EP 0772374 A3 20060329; EP 0772374 B1 20081008; DE 69637704 D1 20081120; DK 0772374 T3 20090202

DOCDB simple family (application)

EP 96203005 A 19961029; DE 69637704 T 19961029; DK 96203005 T 19961029