The acoustic vibration apparatus includes a vibration member 110, a housing 150 at a rear surface of the vibration member, a connection member 140 between the vibration member and the housing, and vibration driving apparatus 130 configured to vibrate the vibration member. The vibration member 110 includes at least one flat portion 110a1 and at least one convex and/or concave curved flexural portion 110a2, 110a3 adjacent to the at least one flat portion. A curvature controlling layer 161-1, 161-2 is located between the vibration driving apparatus 130 and the vibration member 110. The curvature controlling means 160 may be driven by an signal from an amplifier (fig 14) The vibration driving apparatus 130 is preferably piezoelectric, and details of the vibration driving apparatus are described (figs 4-10). The apparatus may be used at different locations within a car (figs 21-26).
Apparatus and vehicular apparatus including the same
2024-05-01
Patent
Electronic Resource
English
IPC: | H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
European Patent Office | 2023
|VEHICULAR APPARATUS AND METHOD FOR ACTIVE NOISE CONTROL, AND VEHICLE INCLUDING VEHICULAR APPARATUS
European Patent Office | 2020
|Vehicular apparatus and method for active noise control, and vehicle including vehicular apparatus
European Patent Office | 2021
|