Abstract:
Изобретение относится к конструкциям устройств для излучения звука, точнее к конструкциям излучателей наушников. Техническим результатом изобретений является повышение акустической мощности излучателя при снижении паразитных резонансов. Электродинамический излучатель наушника, включает корпус, подвижную диафрагму, по меньшей мере, одна поверхность которой снабжена проводниками, магнитную систему, расположенную, по меньшей мере, с одной стороны диафрагмы и выполненную из множества смежных постоянных магнитов. Изобретение отличается от ближайшего аналога тем, что постоянные магниты выполнены в поперечном сечении полукруглой формы, обращенной в сторону диафрагмы, а расстояние между смежными магнитами выполнено не менее 2/3 ширины упомянутых постоянных магнитов. В другом варианте электродинамического излучателя постоянные магниты выполнены в поперечном сечении трапецеидальной формы.
Abstract:
An electrostatic transducer (100) comprises an electrically conductive first member (102) having an array of through apertures (1 12) and one or more further members (104, 106). The one or more further members (104, 106) include a flexible electrically conductive second member (106) arranged in use to be displaced from an equilibrium position towards the first member (102) by an electrostatic force in response to an electrical potential applied to one or both of the first member (102) and the second member (106). At least one (104) of the one or more further members is resiliently deformable and is arranged in use to exert a resilient biasing force biasing said second member (106) back towards said equilibrium position when displaced therefrom by said electrical potential.
Abstract:
A loudspeaker comprising an acoustically radiating diaphragm comprising a generally frustoconical membrane having a narrow neck end and a wide mouth end, stiffening formations for stiffening the radiating membrane and an interface region by which the diaphragm is adapted to be driven; and a transducer comprising a voice coil mounted to drive the diaphragm via its interface region; wherein the interface region is located at the node of the first mode of vibration of the diaphragm.
Abstract:
A waterproof or water-resistant membrane cover (1150) for the acoustic transducer array (1000) of a sodar system. The membrane (1150) is placed over each transducer of the array (1000). The membrane (1150) may be spaced from the array (1000), held in place with a structure such as a frame (1120).
Abstract:
Die Erfindung betrifft eine Membran (1) bzw. Membrananordnung für einen elektrodynamischen Schallwandler, insbesondere Lautsprechermembran für einen Lautsprecher (13), insbesondere für einen Flächenstrahler, vzw. einen AMT-Lautsprecher, wobei die Membran (1) - im eingebauten Zustand - im wesentlichen mäanderförmig ausgebildet ist, vzw. in einem zwischen zwei Polplatten (7, 8) vorgesehenen Luftspalt (9) anordenbar ist, wobei die Membran (1) eine Mehrzahl von sich gegenüberliegenden Flankenseiten (5) sowie eine Mehrzahl von Wellenbergen (3) und/oder Wellentälern (4) aufweist. Störschwingungen sind dadurch vermieden, dass mindestens ein die Lage und/oder die Ausrichtung mindestens eines Wellenberges (3) und/oder Wellentales (4) stabilisierendes Stützelement (10) vorgesehen ist.
Abstract:
The present invention relates to a loudspeaker and diaphragm thereof, especially to a loudspeaker diaphragm that can reduce the divided vibration, decrease the distortion, and make the vibration of the diaphragm well responsive to the driven signal to attain a HI-Fl reproduced effect. The diaphragm have main ribs and sub ribs, the main ribs are arranged at the location from which the loudspeaker diaphragm are connected to the voice coil, and extend along the radial direction of the diaphragm. The sub ribs are set in the direction which crosses the radial direction. The main ribs are perpendicular to the excircle of the voice coil, and the sub ribs are perpendicular to the main ribs. Compared to the existing technology, by using the ribs construction, the present invention improves the buckling strength of the diaphragm, especially reduces the divided vibration and the distortion, improves the efficiency and the rigidity of the diaphragm, and enables the vibration of the diaphragm well responsive to the driven signal. Thus a HI-Fl loudspeaker diaphragm made by less expensive materials can be attained.
Abstract:
Loudspeaker provided with a frame (101), a membrane (103) and a drive unit (105). The membrane has an outer circumferential edge (104a) suspended from the frame and an inner circumferential edge (104b). The drive unit has a stationary part (106a) secured to the frame and a translatable part (106b) provided with a coil support (108b) secured to the inner circumferential edge of the membrane. The membrane includes a membrane body (104) which, viewed in a circumferential direction, has a pattern of folds radially extending between the inner circumferential edge and the flat outer circumferential edge of the membrane. The folds have a depth (d) which increases from the edges (104a, 104b) towards an area (104A) situated between both edges. In this area, the folds are provided with faces (204C), to which a spider (111) of the loudspeaker is secured. This loudspeaker combines a small height with a large stroke of the membrane.
Abstract:
In an electroacoustic transducer (1) having a magnet system (7) and having a moving coil (15), which is disposed in the air gap (14) of the magnet system (7), and having a diaphragm (17) attached to the moving coil (15) the diaphragm (17) has a mounting zone (24) for mounting the moving coil (15), the diaphragm (17) having projections (25) in the mounting zone (24) and the diaphragm (17) having an interspace between every two projections (25), two stabilizing walls (32, 33), which are inclined with respect to the diaphragm axis (18), are arranged each interspace and are arranged so as to form a roof shape and are formed so as to project beyond the mounting zone (24) in radial directions.