摘要:
A sound reproduction system comprises a loudspeaker enclosure that has a first loudspeaker and a second loudspeaker which are mounted on a surface of the loudspeaker enclosure. The first loudspeaker and the second loudspeaker are respectively accommodated in a first space and a second space of the loudspeaker enclosure, said spaces being separated by a partition and being in communication with a first port and a second port, respectively. The first port and the second port are located on opposite sides of the unit formed by the first loudspeaker and the second loudspeaker. According to the invention, processing means are used for respectively applying a first and a second electric signal to the first and the second loudspeaker, said first and second electric signal being generated from a single signal by differentiated phase processing that varies according to the frequency such that the first and the second electric signal are offset relative to one another by a variable period of time which is proportionate to the acoustic distance between the first half of the loudspeaker enclosure comprising the first space, the first loudspeaker, and the first port, and the second half of the loudspeaker enclosure comprising the second space, the second loudspeaker, and the second port.
摘要:
A device for emitting an acoustic wave comprises a flared structural piece (2) bearing at its base an electromechanical transducer (3) and defining at its flared end an output surface (S). A mechano-acoustic coupler (4) made of one piece is a solid piece and exhibits: - a first portion (41) for mounting on the transducer, - a second portion (42) extending from the first portion up to the level of the output surface, the coupler being suspended on the structural piece at the level of the second portion and the second portion having a cross-sectional area at the level of the output surface which is strictly greater than its cross-sectional area at the level of the first portion, and, - a third portion (43) extending from the second portion, where the third portion has a cross-sectional area which is smaller than the output surface, the third portion comprising a cross-section of greater area than the output surface.
摘要:
The invention concerns improvement to a horn or waveguide public address unit, enabling to adapt the dispersion characteristics of said horn or waveguide. The invention is characterised in that it is provided with at least one profiling component (21a, 21b) constituting a removable dispersion shaper, capable of being mounted on the inner wall of the horn (13) or waveguide between the throat (17) and the mouth (19) thereof.
摘要:
Une enceinte acoustique (2) comprend un dispositif de connexion mécanique avec une autre enceinte acoustique et/ou un dispositif (8) de réglage d'un angle formé entre l'enceinte (2) et l'autre enceinte. Le dispositif de connexion comprend un mécanisme de conversion d'une commande en translation selon une première direction en un mouvement de translation d'au moins un premier verrou selon une seconde direction différente de la première direction. Le dispositif de réglage d'angle comprend un élément (8) dont la longueur en position de travail règle ledit angle et est déterminée en fonction de la position d'une pièce rotative (10).
摘要:
The invention concerns a mobile membrane loudspeaker equipped with a partial closure optimising its radiation. The invention is characterised in that the loudspeaker with mobile diaphragm (19) attached to a rigid frame (15) defining an acoustic emission plane (P) comprises a closure (25) for only one central zone of said emission plane.
摘要:
The invention concerns a mobile membrane loudspeaker equipped with a partial closure optimising its radiation. The invention is characterised in that the loudspeaker with mobile diaphragm (19) attached to a rigid frame (15) defining an acoustic emission plane (P) comprises a closure (25) for only one central zone of said emission plane.