采用全面最小二乘法测量开口箱扬声器系统低频特性参数

Low frequency characteristic parameter measurement of vented-box loudspeaker system using Total Least Squares Method

摘要: 本文分析并建立了开口箱扬声器系统的自回归平均(ARMA)模型参数与低频特性参数的关系,采用全面最小二乘(TLS)法辨识开口箱扬声器系统的ARMA模型参数,从而在时域上测出了开口箱扬声器系统的低频特性参数、阻抗曲线和低频响应曲线,取得了较好的结果。

Abstract: The interrelationship between the ARMA model parameters of a vented-box loudspeaker system and low-frequency characteristic parameters is analysed in this paper.These ARMA model parameters are determined by the total least squares (TLS) method.Therefore,we can measure in the time-domain the low frequency characteristic parameters of a vented-box loudspeaker system,its impedance curve and low-frequency response curve.These measured results show a satisfaCtory agreement with the values obtained by the frequency domain measurement