EP 2042000 A2 20090401 - METHOD AND DEVICE FOR DIAGNOSING THE OPERATING STATE OF A SOUND SYSTEM
Title (en)
METHOD AND DEVICE FOR DIAGNOSING THE OPERATING STATE OF A SOUND SYSTEM
Title (de)
FEHLERDIAGNOSEVORRICHTUNG UND -METHODE FÜR EIN BESCHALLUNGSSYSTEM
Title (fr)
PROCEDE ET DISPOSITIF DE DIAGNOSTIC DE L'ETAT DE FONCTIONNEMENT D'UN SYSTEME DE SONORISATION
Publication
Application
Priority
- FR 2007001067 W 20070626
- FR 0606431 A 20060713
Abstract (en)
[origin: WO2008006952A2] The invention relates to a method of diagnosing the operating state, in situ, of a sound system comprising at least one loudspeaker suitable for being connected to an audio player and arranged in an at least partially closed space, characterized in that it comprises the following steps:- broadcasting (32) of acoustic waves representative of a test signal (St(t)) by each loudspeaker into said space; - acquisition (34) of a digital response signal (Sr(t)) representative of the acoustic waves broadcast; - determination (52, 53, 54) of energy distribution coefficients representative of the energy distribution of said digital response signal (Sr(t)) per frequency band; and - comparison (58, 60) of said energy distribution coefficients with predetermined threshold ranges so as to diagnose the operating state of each loudspeaker. The invention also relates to a diagnostic device suitable for carrying out the above method.
IPC 8 full level
H04S 7/00 (2006.01); H04R 29/00 (2006.01)
CPC (source: EP US)
H04R 29/007 (2013.01 - EP US); H04S 7/301 (2013.01 - EP US); H04R 29/001 (2013.01 - EP US); H04R 2430/03 (2013.01 - EP US); H04S 2420/07 (2013.01 - EP US)
Citation (search report)
See references of WO 2008006952A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008006952 A2 20080117; WO 2008006952 A3 20080228; CA 2657450 A1 20080112; EP 2042000 A2 20090401; EP 2042000 B1 20160810; FR 2903853 A1 20080118; FR 2903853 B1 20081017; US 2009304195 A1 20091210
DOCDB simple family (application)
FR 2007001067 W 20070626; CA 2657450 A 20070626; EP 07803779 A 20070626; FR 0606431 A 20060713; US 37337107 A 20070626