Variable-directional Ribbon Type Microphone

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  • 可変指向性リボン形マイクロホン
  • カヘン シコウセイ リボンケイ マイクロホン

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Abstract

This paper describes the designing method of the high fidelity ribbon type microphone for broadcasting purpose which has recently been developed in our laboratory. The design objective was to obtain the wide, uniform frequency responses for all directivity characteristics: omni-, uni- or bi-directional. For that purpose, numerical relationships between elements in the acoustic equivalent circuit were clarified. Then, a few problems on manufacturing of practical product were explaned, taking into consideration the convenience of users and the simplicity of the operation of such products. The trial products based upon these considerations have a good frequency characteristics.

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