Title :
Higher order spectra and the trispectrum
Author :
Collis, W.B. ; White, P.R. ; Hammond, J.K.
Author_Institution :
Inst. of Sound & Vibration Res., Southampton Univ., UK
Abstract :
In this paper we discuss some of the theory behind the trispectrum and look at the methods used to display it. The trispectrum is normalised to form the tricoherence and the use of the tricoherence in detecting quadratic and cubic phase coupling is shown. Finally, an application of the trispectrum in detecting gas bubbles in water is discussed
Keywords :
acoustic signal detection; bubbles; higher order statistics; spectral analysis; water; cubic phase coupling detection; gas bubbles; higher order spectra; hydrophone; quadratic phase coupling detection; tricoherence; trispectrum; underwater transducer; water; Autocorrelation; Condition monitoring; Displays; Fourier transforms; Frequency; Higher order statistics; Linearity; Phase detection; Scanning probe microscopy; Visualization;
Conference_Titel :
Digital Signal Processing Workshop, 1994., 1994 Sixth IEEE
Conference_Location :
Yosemite National Park, CA
Print_ISBN :
0-7803-1948-6
DOI :
10.1109/DSP.1994.379870
