【摘要】 研究圆环式径向换能器辐射声场特性,和分析声场的指向特性,得出圆环式径向换能器径向没有指向性而竖向有指向性,且环带越宽旁瓣越多,主瓣越尖锐.讨论了辐射声场的近场特性,表明近场和远场之间存在临界点,临界点随环宽变化而变化,环宽越大,临界点离环中心越远;反之,临界点离环中心越近.更多还原

【Abstract】 The radiated sound field of traffic circle radial transducer is researched.After analyzing the pressure distribution of the sound field,it concludes that the pressure distribution of the traffic circle radial transducer is not radial but vertical,and the broader the ring size is,the more sidelobes there are,the sharper the mainlobe is.By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical pole is influenced by the ring size.The larger the ring size is,the longer the distance between the critical pole and the center of the ring is,and vice versa.更多还原