【摘要】 有效识别舱音记录器声信息对失事飞机原因调查十分重要。文章介绍了飞机舱音记录器、舱音记录器声信息及特点。指出了当前国内基于计算机音频处理技术的舱音记录器声信息译码系统在对声信息辨听方法上存在的不足。系统提出了运用MATLAB语言和小波变换对舱音记录器所记录的声信息(噪声、语音信息和其它背景声信息)识别方法。更多还原

【Abstract】 It′s very favorable for accident cause investigation of wreckage airplane if Cockpit Voice Recorder(CVR)′ sound information is effectively identified.CVR and CVR′ sound information & characteristics are first presented in the paper.Then,the shortages of CVR sound information decoding system based on audio-frequency techniques are point out.The computer processing methods,applying to CVR sound information(noise、speech signals & background sound),are systemically put forward according to Matlab & Wavelet Transform.更多还原