中文摘要：

舱音记录器中的声信息对失事飞机原因调查十分重要。在分析舱音声信息的特殊性和MATLAB数学软件强大功能和优势基础上,从录制的多个典型舱音中选取其中的"火警警铃"舱音样本为例,设计了MATLAB环境的载入程序,避免了类似于C语言的循环语句等编程复杂等问题,完成舱音信息的时频分析与处理,得到期望的效果。最后在MATLAB图形用户界面(GUI)设计出适合人机对话的操作流程,使得舱音分析过程简单、实用,并在典型舱音分析中得到验证。

英文摘要：

The voice signal in cockpit voice recorder (CVR) is very important forifnding the cause of aircraft accident. First explain the particularity of such voice and MATLAB’s powerful function, then takeifre alarm as an example to design load program in MATLAB environment, dispose time-frequency analysis and get the results. Its advantage is avoided the complexity and the long operation time like C program. Finally work out the interface that suitable for the man-machine conversation in graphical user interface (GUI). It is conifrmed with typical cockpit voices and make the analysis procedure simpler and more practical.