DIRECTIONAL SOUND PRODUCING DEVICE AND DIRECTIONAL SPEAKER ARRAY HAVING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a directional sound producing device and a directional speaker array having the device.

SOLUTION: A directional sound producing device which outputs concentrically sound only to a specified area and a directional speaker array having the device are disclosed. The directional sound producing device is configured so as to include a sound transducer which outputs a sound wave of a reverse phase forward and backward and a reflection board which is positioned at the rear of the sound transducer and includes a block board which separates the front portion from the back portion of the sound transducer and increases an interference distance between a front emission sound and a back emission sound from the sound transducer. Thereby, a uniform sound pressure level is obtained in a whole frequency area, and moreover the directionality of sound can be improved.

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