A New Type Of Digital Band - Pass Filter

Suprajitno Munadi


Digital filtering is mathematical process which provides a means of filtering data numerically. The filtering process can be carried out in the frequency domain to discriminate signal and noise based on the frequency differencesThe digital band-pass frequency filtering has been effectively accomplished using a new type of digital filter. This filter is the result of compolving a boxcar spectral window with a frequency shifted Gaussian function which produces a very smooth transition between the pass-band and the stop-band region. The slope of the filter is controlled by the exponential coefficient of the Gaussian function. For a very narrow pass-band the exponential coefficient also controls the resolution of the filter.Experiments have been done with the Synthetic Vertical Seismic Profiles data to prove the performance of the filter and shows a good results.



Digital Band, Pass Filter

Full Text:



- Ackroyd, M.H., 1973 - Digital Förers, Butterworth, London.

- Al Sadi, H.N., 1980 - Seismic Exploration, Techniques and Processing, Birkhauser Verlag, Stutt gart.

- Bath, M., 1974 - Special Analysis in Geophysics, Elsevier, New York, p. 155.

- Bogner, R.E. and Constantinides, A.G., 1975 - Introduction to Digital Filtering, Wiley, New York.

- Bracewell, R., 1965 – The Fourier Transform and its Applications, McGraw-Hill, New York.

- Brigham, E.O., 1974 - The Fast Fourier Transform. Prentice Hall, Englewood Cliff, New Jersey.

- Champeney, D.C., 1973 – Fourier Transform and their physical Application, Academic Press, London.

- Cooley, J.W. and Tukey, J.W., 1965 – An Algorithme for the Machine Calculation of Complex Fourier Series, Mathematics of Computation 19, 297 - 301.

- Dziewonski, A., Block, S. and Landisman, M., 1969 - A Technique for the Analysis of Transient Seismic Signals, Bulletin of the Seismological Society of America, 59,427 - 444.

- Gold, B. and Rader, C.M., 1969 – Digital Processing of Signals, McGraw-Hill, New York.

- Golden, R.M. and Kaiser, J.F., 1964 – Design of Wideband Sampled-Data Filter, The Bell Telephone Technical Journal 43, 1533-1546.

- Kanasewich, E.R., 1981 – Time sequence Analysis in Geophysics, The University of Alberta Press, 3rd Edition, Alberta, p. 110.

- Mooney, H.M., 1968 - Short Nore-Pole and Zero Design of Digital Filters, Geophysics 33,354.

- Oppenheim, A.V. and Schaffer, RW., 1975 - Digital Signal Processing, Prentice-Hall, Englewood Cliff, New Jersey.

- Papoulis, A., 1977 – Signal Arlysis, McGraw-Hill, Tokyo, p. 383.

- Rabiner, L. R. and Gold, B., 1975 - Theory and Application of Digital Signal Processing, Prentice Hall, Englewood Cliffs, New Jersey.

- Rabiner, L.R. and Rader, C.M., 1972 - Digital Signal Processing, IEEE Press, New York.

- Rader, C.M. and Gold, B., 1967 - Dettal Filters Design Techniques in The Frequency Domain, Proc. IEEE 55. 149 - 171.

- Robinson, E. A. and Treitel, S., 1964 – Principle of Digital Filtering, Geophysics 23,44 - 57.

- Shanks, J.L., 1967 - Recursive filters for digital Processing, Geophysics 32,33 - 51.

- Sheriff, R.E., 1973 – Encyclopedie Dictionary of Exploration Geophysics, Society of Exploration Geophysicists, Oklahoma.

DOI: https://doi.org/10.29017/SCOG.9.1.898

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.