DocumentCode
2391991
Title
Fourier analysis of continuous data using DFTs
Author
Thong, Tran
Author_Institution
Tektronix Inc., Beaverton, OR, USA
fYear
1988
fDate
7-9 Jun 1988
Firstpage
1907
Abstract
Traditionally the discrete Fourier transform (DFT) has been viewed as a mathematical transform. L.R. Rabiner and B. Gold (1975) have pointed out that, for continuous data, the DFT can be viewed as a bank of digital filters. The author looks at the issues related to this view of the DFT. Specifically, he reviews the resampling process associated with performing the DFT on an infinitely long stream of data and points out that the key issue is aliasing. He also reviews an efficient means for achieving locally very high resolution spectrum analysis while the complete spectrum is monitored. This is the concept of post-DFT zoom
Keywords
Fourier transforms; filtering and prediction theory; spectral analysis; Fourier analysis; continuous data; digital filters; discrete Fourier transform; mathematical transform; resampling process; spectrum analysis; Data analysis; Digital filters; Discrete Fourier transforms; Filter bank; Finite impulse response filter; Frequency; Laboratories; Low pass filters; Monitoring; Sampling methods;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location
Espoo
Type
conf
DOI
10.1109/ISCAS.1988.15310
Filename
15310
Link To Document