民机驾驶舱舱音小波包分析及特征提取

郭超;姚红宇;舒平;陈果

振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 95-98.

PDF(290 KB)
PDF(290 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (7) : 95-98.
论文

民机驾驶舱舱音小波包分析及特征提取

  • 郭超1,姚红宇2,舒平2,陈果1
作者信息 +

The Wavelet Analysis and Feature Extraction for Sound
in Civil Aircraft Cockpit

  • Guo Chao.1 Yao Hong-yu. 2 Shu ping. 2 Chen Guo. 1
Author information +
文章历史 +

摘要

摘 要针对民航事故调查中的舱音背景声分析,利用小波包分析方法,对不同种类开关手柄声进行了三层分解,提取了不同开关手柄声的各频带归一化能量特征用于对开关手柄进行识别。最后,以B737客机的常用开关手柄的声音为研究对象,采集了大量舱音信号,利用该方法,对舱音信号进行了分析识别,并对结果进行统计验证。

Abstract

Abstract: For the aircraft cockpit background sound analysis in civil aviation accident investigation, the wavelet packet analysis method is used to carry out the time-frequency analysis of the different types of switches’ sounds, and extract the bands normalization energy characteristics which can be applied to identify various types of switches sounds. Finally, the typical switches sounds for the B737 aircraft are acted as the research objects, and a number of samples coming from various types of switches sounds are collected from experiments. The sounds samples are analyzed and the energy features are extracted and the results are statistically verified which are fully show the validity of this method.

关键词

民用飞机 / 事故调查 / 舱音分析 / 小波分析 / 特征提取

Key words

Civil Aircraft / Accident Investigation / Cockpit Sound Analysis / Wavelet Analysis / Feature Extraction

引用本文

导出引用
郭超;姚红宇;舒平;陈果. 民机驾驶舱舱音小波包分析及特征提取[J]. 振动与冲击, 2009, 28(7): 95-98
Guo Chao.) Yao Hong-yu. ) Shu ping. ) Chen Guo. ).
The Wavelet Analysis and Feature Extraction for Sound
in Civil Aircraft Cockpit[J].
Journal of Vibration and Shock, 2009, 28(7): 95-98

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