摩托车电喇叭声音性能分析方法研究*

作者：黄丽雯,郭小渝 日期：2009-02-23/span> 浏览：4331 查看PDF文档

摩托车电喇叭声音性能分析方法研究*

黄丽雯,郭小渝
（重庆工学院 电子信息与自动化学院,重庆 400050）

摘要：为实现在生产线上对摩托车电喇叭产品进行合格检测和调试,建立了机动车电喇叭的物理/数学模型，分析研究了声音性能指标参数与电喇叭机械零部件之间的关系，提出了一种通过频域图中包络的幅度值和周期范围对检测结果进行分析，并指导调节喇叭参数的声音性能分析方法,实现了对电喇叭产品的频谱包络、共振峰值的位置和基频周期等合格性指标的有效检测与快速调试。实践证明,该方法行之有效，且操作性强。
关键词：电喇叭;基频;频谱包络;离散傅里叶变换
中图分类号：TB53文献标识码：A文章编号：1001-4551(2009)02-0085-03

Analysis of motorcycle electric horn sound performance
HUANG Li-wen, GUO Xiao-yu
（College of Eleetronic Information & Automation, Chongqing Institute of Technology, Chongqing 400050, China）
Abstract: For realizing the qualified testing and commissioning of motorcycle electric horn products on production line, a plysical/mathematical model of the vehicle electric horn was established. The relationgships of sound performance parameters and mechanical components were studied and analyzed. A analysis method of sound performance was proposed.Using the rate value and cycle of the envelope in frequency domain figure, the test results were analyzed,and the horn parameter adjustment was guided.The efficient testing and quick commissioning of qualified indicators such as frequency spectrum envelope, the resonance peak position, and basic frequency cycle of electric horn products were realized.Practice proves that the method is highly efficient and simple.
Key words: electric horn; basic frequency; frequency spectrum envelope; aseparated Fourier transform
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