计量学报2024，Vol.45Issue(4)：573-579,7.DOI:10.3969/j.issn.1000-1158.2024.04.17
消声室传声路径校准中传声路径位置偏差的影响因素研究
Study on Influencing Factors of Location Deviation of Sound Transmission Path in Anechoic Chamber Calibration
摘要
Abstract
Anechoic chamber acoustic measurement is an important means to measure the acoustic characteristics of products,and its performance directly affects the accuracy of relevant acoustic tests.The accuracy of measurement process is not only limited by theoretical calculation,but also affected by practical measurement process.Due to the dead weight of the sound transmitting device and the wire rope,the sound transmitting path is deformed from an ideal straight line to a curve,which affects the accuracy of the acoustic performance measurement.Therefore,it is particularly important to calibrate the sound transmission path of anechoic chamber.Finite element simulation focuses on the influence of rope length,tightness and inclination on the sound transmission path,verifies the accuracy of the simulation model through corresponding experiments,and studies the specific influence of different parameters on the sound transmission path through lateral comparison of parameters.Aiming at the study of parameters on the deviation of sound transmission path,a way for the calibration of sound transmission path error from multiple perspectives is provided,which is helpful to improve the accuracy of anechoic chamber measurement device and promote the development of high-precision automatic calibration system of anechoic chamber to a certain extent.关键词
声学测量/消声室/有限元仿真/传声路径/误差校准Key words
acoustic measurement/anechoic chamber/finite element simulation/sound transmission path/calibration of error分类
通用工业技术引用本文复制引用
阮张锋,顾诚诚,陈海咏,丁继杰,孟紫薇..消声室传声路径校准中传声路径位置偏差的影响因素研究[J].计量学报,2024,45(4):573-579,7.基金项目
上海市质量监督检验技术研究院科研项目(KY-2020-32-JL) （KY-2020-32-JL）
