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US 2007/0165876 A1Published application
Sound device provided with a geometric and electronic radiation control
AssigneeActive Audio
InventorXavier Meynial
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AssigneeActive Audio
InventorXavier Meynial
Estimating the term…
A sound device for carrying out a homogenous sound cover for a public addressed area includes an electroacoustic source network (1), wherein each electroacoustic source (1) diffuses a version delayed by a delay (3), filtered by a filter (4) and amplified by the device input signal amplifier (5). The network is substantially rectilinear and vertical, angles e which are formed by the emitting axes of the electroacoustic sources (1) and a normal to the network are selected such that θn>θn−1, wherein n is the index of the electroacoustic sources (1) numbered in ascending order from the top of the device to the bottom thereof and the delays (3) interact with the angles θ in such a way that the device generates a wavefront (6) whose shape corresponds to the desired sound cover of the public addressed area.
Public address system allowing uniform sound coverage over a zone to be addressed, comprising a network of electroacoustic sources (1), each electroacoustic source (1) diffusing a version delayed by a delay (3), filtered by a filter (4), and amplified by an input signal amplifier (5) of the system, characterized in that said network is essentially rectilinear and vertical, in that the angles θ formed by the axes of emission of the electroacoustic sources (1) and the normal line to the network are such that θn>θn−1, where n is the index of the electroacoustic sources (1) numbered in increasing order from top to bottom of the system, and in that the delays (3) work with the angles θ such that the system generates a wave front (6) of the shape corresponding to the desired sound coverage of the zone to be addressed.
Dependencies are inferred from the claim text.