Global Patent Index - EP 1408717 A3

EP 1408717 A3 20040804 - Combination loudspeaker unit

Title (en)

Combination loudspeaker unit

Title (de)

Kombinierte Lautsprechereinheit

Title (fr)

Unité combiné de haut parleurs

Publication

EP 1408717 A3 20040804 (EN)

Application

EP 03255099 A 20030818

Priority

  • GB 0219245 A 20020817
  • GB 0317445 A 20030725

Abstract (en)

[origin: EP1408717A2] A loudspeaker unit comprises, in combination, a pistonically driven diaphragm loudspeaker and a generally planar resonant panel loudspeaker, in which the plane of the resonant panel lies in the same orientation as an axis along which the diaphragm is pistonically driven. The resonant panel loudspeaker may be located behind the diaphragm loudspeaker, with the resonant panel loudspeaker functioning as a diffuse dipole, e.g. to generate surround sound reproduction, and the diaphragm loudspeaker located in the null of the dipole and functioning as an acoustic monopole, e.g. to generate imaged stereophonic sound reproduction. <IMAGE>

IPC 1-7

H04R 7/04; H04R 1/24

IPC 8 full level

H04R 1/24 (2006.01); H04R 7/04 (2006.01); H04R 1/26 (2006.01)

CPC (source: EP GB)

H04R 1/24 (2013.01 - EP GB); H04R 7/045 (2013.01 - EP); H04R 1/26 (2013.01 - EP); H04R 1/323 (2013.01 - GB); H04R 7/045 (2013.01 - GB); H04R 2205/022 (2013.01 - EP); H04R 2440/07 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1408717 A2 20040414; EP 1408717 A3 20040804; EP 1408717 B1 20060301; AT E319279 T1 20060315; DE 60303748 D1 20060427; DE 60303748 T2 20061109; DK 1408717 T3 20060710; ES 2260580 T3 20061101; GB 0319297 D0 20030917; GB 2392043 A 20040218; GB 2392043 B 20060322; PT 1408717 E 20060731

DOCDB simple family (application)

EP 03255099 A 20030818; AT 03255099 T 20030818; DE 60303748 T 20030818; DK 03255099 T 20030818; ES 03255099 T 20030818; GB 0319297 A 20030818; PT 03255099 T 20030818