EP 3820159 B1 20230621 - ACOUSTIC SPEAKER
Title (en)
ACOUSTIC SPEAKER
Title (de)
LAUTSPRECHER
Title (fr)
HAUTPARLEUR
Publication
Application
Priority
IT 201900020664 A 20191108
Abstract (en)
[origin: EP3820159A1] Described is an acoustic speaker (1) for the reproduction of audio signals, comprising a first speaker (100A) and a respective first chamber, for reproducing at least one first audio signal y<sub>1</sub>(t) in a first frequency range, a second speaker (101A) and a respective second chamber, for reproducing at least one second audio signal y<sub>2</sub>(t) in a second frequency range equal to or different from said first frequency range, and a third speaker (102A) and a respective third chamber, for reproducing at least one third audio signal y<sub>3</sub>(t) in a third frequency range equal to or different from said first frequency range and from said second frequency range, a main resonance chamber (113) provided with a main opening (103), and a structure for supporting said speakers and said main resonance chamber (113), said acoustic speaker (1) being characterised in that each of said first (100A), second (101A) and third (102A) speaker is arranged on a respective vertex of an equilateral triangle which circumscribes said main opening (103), said first (100A), second (101A) and third (102A) speaker and said main opening (103) being arranged on a same plane XY and oriented according to a same direction along a Z axis, perpendicular to said plane XY, so as to reproduce a further audio signal y(t) resulting from the combination of said at least one first audio signal y<sub>1</sub>(t), said at least one second audio signal y<sub>2</sub>(t) and said at least one third audio signal y<sub>3</sub>(t), and in that said further audio signal y(t) results from the following formula y(t) = Ao+∑n=1∞Ansinnωt+ϕn.
IPC 8 full level
CPC (source: EP)
H04R 1/26 (2013.01); H04R 1/2888 (2013.01); H04R 1/24 (2013.01); H04R 1/2811 (2013.01); H04R 2201/02 (2013.01)
Citation (examination)
EP 0521655 A1 19930107 - YUGEN KAISHA TAGUCHI SEISAKUSH [JP]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3820159 A1 20210512; EP 3820159 B1 20230621; EP 3820159 C0 20230621; IT 201900020664 A1 20210508
DOCDB simple family (application)
EP 20204192 A 20201027; IT 201900020664 A 20191108