alexa Aircraft Black Box |OMICS International|Journals|Journal Of Aeronautics And Aerospace Engineering

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Aircraft Black Box

Both CVR and Flight Data Recorder(FDR) are composed the Aircraft Black Box, which is essential airborne equipment for modern commercial aviation aircraft, and plays an irreplaceable role in the aircraft accident investigation and wrecked airplane’ cause analyses. The Cockpit Voice Recorder (CVR) records many kinds of sounds during flight, which is called as cockpit voice in the professional. Cockpit voice is mainly composition by the sound signal, which is often called as the cockpit sound information in engineering. Research shows cockpit voices are often divided into three different: including voices (phonetic), noise and background sounds in details. Their frequencies of different background sounds are different, and frequencies ranges are between 150Hz and 6800Hz, and such wide frequency range is difficult to analyze. At the same time, frequency characteristics are important features for different background sounds. It is very important for us to obtain and accurately analyze the different characteristics of background sounds in the investigation of flight accidents and incidents, which are directly related to the safety of aircraft flight
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Last date updated on July, 2014

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