吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (05): 1433-1440.doi: 10.7964/jdxbgxb201305044

• paper • Previous Articles    

Technologies of sound analysis and synthesis for audio system of flight simulator

SHENG Xiao-wei1, ZHENG Shu-tao2, HAN Jun-wei2   

  1. 1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China;
    2. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2012-04-05 Online:2013-09-01 Published:2013-09-01

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Abstract:

After briefing the development of audio system, this article explains the necessity of sound source extraction. New methods of extraction of sound sources from the original recordings of aircraft cockpit using short-time Fourier analysis/synthesis technology and linear prediction analysis/synthesis technology are proposed. The main theory and extracting steps of the two methods are discussed in detail. Two case studies are conducted to describe sound extraction of extending landing gear using short-time Fourier analysis/synthesis, and aerodynamic hiss extraction in flight using linear prediction analysis/synthesis from original recordings. The case studies and technology development reveal that short-time Fourier analysis/synthesis is more common and applicable to most sound sources, and linear prediction analysis/synthesis is more suitable to noise extraction. The two technologies can also be used for audio system developments of other vehicle simulators. Therefore, they possess important value in engineering application.

Key words: information processing technology, audio system, sound source extraction, short-time Fourier analysis/synthesis, linear prediction analysis/synthesis

CLC Number: 

  • TN911.7

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