| 摘要 |
A method discloses measuring electroacoustic parameters of transducer. With known voice-coil displacement, voice-coil current, transducer impedance and its stimulus signal as inputs, the five calculation procedures of direct problem, adjoint problem, sensitivity problem, conjugate gradient method, and constraint equations are involved in inversely solving electroacoustic parameters. The presented method has the characteristics of high efficiently, low iterations for computational algorithm, and high accuracy for electroacoustic parameters estimation. Through the numerical result and discussion, the relative errors between estimated and accurate electroacoustic parameters are sufficiently small even with the inclusion of the inevitable measurement errors. These results indicate that the presented method has high feasibility for estimating electroacoustic parameters of a transducer. |
