| 摘要 |
The focused emission and disruption of the tone structure led to two conical membranes which emit omnidirectionally, move in a rolling-off manner and [lacuna] of a plurality of trapezoidal, straight, inflexible and reinforced [lacuna], connected by means of folds, form the closed membrane body which is arranged axially symmetrically between two oscillating systems. Rotation-point positions on the membrane elements cause phase-rotating membrane parts and severe distortion. The invention uses curved, elastic membrane elements which become more rigid towards the oscillating coil and do not rest against one another in the equatorial region but are connected at a distance by elastic angle brackets and have no angle-forming transitions and rotation points on the oscillating coil. Furthermore, subsections of the membrane body are excited more strongly in terms of oscillation by means of additional transducer systems which can be integrated in a damping body (which stands proud in the membrane body) and are in each case aligned radially with respect to the relevant membrane elements. The uneven distribution of the radiation intensity enables, in the case of the transducers being arranged to match the direct and indirect sound components to the acoustic conditions in the room, as a result of which the optimum hearing position is no longer linked to one location and the production of a sound can nevertheless be localised and remains fixed in position.
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