Title :
Subband auto and cross-correlation estimation by recursive filtering
Author :
Sarris, John C. ; Cambourakis, George E.
Author_Institution :
Sch. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece
Abstract :
The auto and cross-correlation functions have proven to be valuable tools for many digital signal processing applications. Here, we extend these two functions and define the subband auto and cross-correlation equivalents. The new functions provide precious insight on the time-varying structure of non-stationary signals. For an efficient implementation recursive filters arranged in a filter bank structure are employed.
Keywords :
correlation methods; recursive filters; signal processing; time-varying filters; digital signal processing; filter bank structure; nonstationary signals; recursive filters; subband autocorrelation functions; subband cross-correlation functions; time-varying structure; Autocorrelation; Digital signal processing; Discrete Fourier transforms; Discrete transforms; Filter bank; Fourier transforms; Recursive estimation; Signal analysis; Signal processing; Speech analysis;
Conference_Titel :
Image and Signal Processing and Analysis, 2003. ISPA 2003. Proceedings of the 3rd International Symposium on
Print_ISBN :
953-184-061-X
DOI :
10.1109/ISPA.2003.1296863
