Title :
Research on ´similar beat´ phenomenon
Author :
Tao, Liu ; Tianzhen, Wang ; Liang, Zhao
Author_Institution :
Digital Image Process. Lab., Wuhan Univ. of Technol., China
Abstract :
By studying of DFT, some interesting phenomena relating to special frequency of sinusoidal signal that are similar to the beat phenomenon in physical vibration theory are found. In this paper, the characteristics of its spectrogram are described in detail, and we have analyzed the reasons that cause this kind of phenomenon by the angle of phase difference.
Keywords :
discrete Fourier transforms; frequency estimation; phase estimation; signal processing; spectral analysis; DFT; phase difference angle; physical vibration theory; similar beat phenomenon; sinusoidal signal; special frequency; spectrogram; Cathode ray tubes; Computer displays; Digital images; Discrete Fourier transforms; Frequency; Image analysis; Laboratories; Signal processing; Signal resolution; Spectrogram;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1181337
