The acoustic baffle 2 is made up of one or more layers of concentrically arranged curved cells 8. The cells 8 each have opposing first and second walls 11, 12 defining at least one resonator chamber 9 for attenuating sound waves generated by the acoustic source 3. The first wall 11 has an inlet aperture 16 for ingress of sound waves generated by the acoustic source into the resonator chamber 9; and the second wall 12 has an outlet aperture 17 for egress of attenuated sound waves from the resonator chamber 9. Attenuated sound waves may then enter another cell. The volume of the cells increases with increasing radial distance from a central axis 10. The baffle may be placed to the rear of a loudspeaker drive unit (fig 1) in a vehicle.
Acoustic baffle
2017-07-19
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 / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES |
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