DocumentCode
3441936
Title
Frequency-shift: a way to reduce aliasing in the complex cepstrum
Author
Bysted, T.K.
Author_Institution
Dept. of Inf. Technol., Tech. Univ. Denmark, Lyngby, Denmark
Volume
3
fYear
1998
fDate
1998
Firstpage
557
Abstract
The well-known relation between a time signal and its frequency-shifted spectrum is introduced as an excellent tool for reduction of aliasing in the complex cepstrum. Using N points DFTs the frequency-shift property, when used in the right way, will reduce the aliasing error to a size which on average is identical to the one normally requiring 2N points DFTs. The cost is an insignificant increase in the number of operations compared to the total number needed for the transformation to the complex cepstrum domain
Keywords
FIR filters; autoregressive moving average processes; cepstral analysis; discrete Fourier transforms; equiripple filters; low-pass filters; signal processing; ARMA model; N points DFTs; aliasing error; aliasing reduction; complex cepstrum; equiripple lowpass linear-phase FIR filter; frequency-shifted spectrum; signal processing; time signal; Cepstrum; Costs; Deconvolution; Discrete Fourier transforms; Fourier transforms; Frequency; Information technology; Seismology; Signal processing; Speech processing;
fLanguage
English
Publisher
ieee
Conference_Titel
Electronics, Circuits and Systems, 1998 IEEE International Conference on
Conference_Location
Lisboa
Print_ISBN
0-7803-5008-1
Type
conf
DOI
10.1109/ICECS.1998.814091
Filename
814091
Link To Document