依据扬声器的力学性质拓展其低频响应的电路原理初探

本文阐述了在低频段闭箱上扬声器轴向远场声压频平坦时，分别作用于扬声器阻尼，质量和弹性三元件上的力，以及这三个力与频率的关系以及这三个力间的相位关系，根据这些关系，提出了一种处理声频信号电压的电路原理，该电路将声频信号电压处理为分别上述作用于三元件上的力相对应的三个信号电压，这三信号电压相加后，再馈于扬声器，可拓展其低频响应。

A priliminary effort to extend speaker''s low-frequency response with an electrical circuit based on the mechanical properties

When the low frequency response of l sound l pressure on speaker attached to closed box is uniform far at axis, the forces which act on three components of speaker,damping, mass and elasticity are discussed in this paper. The frequencies and phases with relation to three forces are also analysed. According to these relations, the circuit which can process voice signal voltage is presented. The circuit turns voice signal voltage into three signal voltages which correspond respectively to the forces on three components. Afte r these three signal voltages are added and sent to speaker, the low frequency response can be extended.