【摘要】 本文阐明了铁磁流体电动式声源的换能机理．我们详细地研究了它的磁路结构，及在振动活塞上安置一个大的橡皮充气球泡，它能提高低频的辐射效率．这声源具有4个倍频程的低频宽带发射响应更多还原

【Abstract】 This paper explains the transducing mechanism of the ferromagnetic fluid electrodyanmic troe acoustic source. We study it’s magnetic circuit structure in detail, and alarge air filled spherical rubber chamber is fixed on the vibrating piston. It may increasethe low frequency effciency of radiation. This acoustic source can get four octaves of wide band transmitting response in low frequency rang.更多还原