扬声器单元非线性Bl值和驱动力的研究  

Study on Nonlinear Bl and Driving Force of Loudspeaker Driver

作　　者：卢国潮[1,2] 沈勇[1] 刘殷 

机构地区：[1]南京大学,江苏南京210093 [2]浙江天乐集团有限公司,浙江嵊州312400

出　　处：《电声技术》2015年第1期21-23,共3页Audio Engineering

摘　　要：研究了扬声器单元的阻抗曲线与输入电压的关系,给出了与输入电压和频率有关的非线性Bl值的计算公式,给出了扬声器单元驱动力频率响应曲线,设计了一种通过测量阻抗曲线得到扬声器单元非线性Bl值和驱动力的方法,并进行了实验验证,该方法具有较强实用性。The relationship between the impedance of the loudspeaker driver and the input voltage is analyzed. The calculation formulas of Bl associated with input voltage and frequency and the driver force are given. The method to measure the dramatic BI using the impedance is discussed and verified by experiments. The results of the experiments reveal the nonlinearity of Bl.

关 键 词：扬声器单元 Bl值 阻抗曲线 

分 类 号：TN643[电子电信—电路与系统]