| 摘要 |
A loudspeaker 20 comprising a horn waveguide 40 having a throat and a waveguide surface; an acoustic radiator assembly 22, located at the throat of the waveguide, comprising a diaphragm having a rigid acoustically radiating surface shaped as a section from a toroidal surface for generating acoustic wavefronts, the waveguide surface being adapted to match the shape of the wavefronts coming from the assembly. The acoustic radiator assembly may comprise a plurality of individual driveable diaphragm elements (Fig. 3). The loudspeaker may also contain a phase plug 70 with an outlet shaped as a section from a toroidal surface 74. |
