Title :
Application of time-frequency and time-scale analysis to underwater acoustic transients
Author :
Marple, Larry ; Brotherton, Tom ; Pollard, Tom ; Barton, Rick ; Krieger, Avi
Author_Institution :
Orincon Corp., Columbia, MD, USA
Abstract :
Side-by-side comparisons of numerous time-frequency and time-scale representations of unclassified acoustic transients are presented. The techniques illustrated include the short-time Fourier transform (STFT) tuned to different analysis bandwidths, the Gabor-wavelet time-scale representation (TSR), the adaptive optimal radially Gaussian kernel (AOK) time-frequency representation (TFR), and model based TFRs. The strengths and weaknesses of the various analysis representations are discussed
Keywords :
Fourier transforms; acoustic signal processing; time-frequency analysis; transients; underwater sound; wavelet transforms; Gabor-wavelet time-scale representation; Prony model; SVD; adaptive optimal radially Gaussian kernel; bispectrum; short-time Fourier transform; time-frequency analysis; time-scale analysis; underwater acoustic transients; Background noise; Covariance matrix; Eigenvalues and eigenfunctions; Fourier transforms; Robustness; Signal processing; Signal processing algorithms; Time frequency analysis; Transient analysis; Underwater acoustics;
Conference_Titel :
Signals, Systems and Computers, 1992. 1992 Conference Record of The Twenty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-3160-0
DOI :
10.1109/ACSSC.1992.269246
