| 摘要 |
PURPOSE:To prevent resonance phenomena and flatten the medium frequency range of axial sound pressure frequencies by forming fine crack structural parts in a portion of diaphragm material and continuously filling acoustic damping material. CONSTITUTION:Fine crack structural parts 2 disperse unnecessary stress waves propagaging in the electroacoustic transducer diaphragm and prevent standing waving and resonating of stress waves. Further when acoustic control material 3 is filled in the structural parts 2, viscous effect is provided to the fine mesh form structural parts spreading three-dimensionally and therefore the phases of stress waves are shifted, and overall standing waving of the stress waves is prevented, whereby resonance phenomena are inhibited. Thereby, the medium frequency range of axial sound pressure frequency characteristics may be flattened. |
