1Pickover C A. On the Use of Symmetrized Dot Patterns for the Visual Characterization of Speech Waveforms and Other Sampled Data[J].Journal of The Acoustical Society of America,1986.955-960.
2Shibata K,Takahashi A,Shirai T. Fault Diagnosis of Rotating Machinery Through Visualisation of Sound Signal[J].Mechanical Systems & Signal Processing,2000,(02):229-241.
3Wua J D,Chuangb C Q. Fault Diagnosis of Internal Combustion Engines Using Visual Dot Patterns of Acoustic and Vibration Signals[J].NDT & E International,2005,(08):605-614.
4Delvecchio S,D'Elia G,Mucchi E. Advanced Signal Processing Tools for the Vibratory Surveillance of Assembly Faults in Diesel Engine Cold Tests[J].ASME Journal of Vibration and Acoustics,2010,(02).
5Meyer Y. Wavelet Algorithms and Applications[M].Philadelphia:Society for Industrial and Applied Mathematics,1993.