Warianty tytułu
Języki publikacji
Abstrakty
This paper presents a new class of filters that can meet biomedical signal processing needs. The paper is written in a technical note style, therefore, the proposed filters are not discussed with respect to a specific problem appearing in processing of a particular biosignal. The class of filters presented in this note should be treated as a new effective tool which can be applied to many cases of biomedical signals, especially when the processing time is very important. Nevertheless, a simple example of biomedical signal filtering is presented. This paper presents a new concept of continuous-time Butterworth filters whose parameters are varied in time. Thanks to the variation of the filter parameters, the time-varying filter response is considerably faster in comparison with the traditional time-invariant filters. Therefore, we can measure and register a lot of details in the initial stage of signal duration, which is not possible in the case of traditional time-invariant filters due to their long-lasting transients. Results verifying the effectiveness of the proposed filters are presented and compared to the traditional time-invariant filter structures.
Czasopismo
Rocznik
Tom
Strony
27-37
Opis fizyczny
Bibliogr. 13 poz., rys., wykr.
Twórcy
autor
- Department of Electrical Engineering, West Pomeranian University of Technology, ul. Gen. Sikorskiego 37, 70-313 Szczecin, jacek.piskorowski@zut.edu.pl
Bibliografia
- 1. Robertson D. G. E., Dowling J. J.: Design and responses of Butterworth and critically damped digital filters. J. Electromyogr. Kinesiol. 2003, 13, 569-573.
- 2. Chen W. K.: The Circuits and Filters Handbook. CRC Press, Boca Raton 1995.
- 3. Schaumann R., Van Valkenburg M. E.: Design of Analog Filters. Oxford University Press. New York-Oxford 2001.
- 4. Su K. L.: Analog Filters. Chapman & Hall, London 1996.
- 5. Kaszynski R., Jaskula M.: Using the parametric time-varying analog filter to average-evoked potential signals. IEEE Trans. Instrum. Measur. 2004, 53, 3, 709-715.
- 6. Piskorowski J., Kaszynski R.: A novel concept of phase-compensated continuous-time filters. Anal. Integr. Circ. Sign. Proc. 2007, 51, 1, 39-44.
- 7. Claasen T. A. C. M., Mecklenbrauker W. F. G.: On stationary linear time-varying systems. IEEE Trans. Circ. Syst. 1982, CAS-29, 3, 169-184.
- 8. Margrave G. F.: Theory of nonstationary linear filtering in the Fourier domain with application to time variant filtering. Geophysics 1983, 63, 244-259.
- 9. Zadeh L. A.: Frequency analysis of variable networks. Proc. IRE 1950, 32, 291-299.
- 10. Zadeh L. A.: Time-varying networks-I. Proc. IRE 49, 1961, 1488-1503.
- 11. Kaszynski R.: Stability of parametric, analog low-pass filters. Proc. IEEE Int. Conference on Emerging Technologies and Factory Automation, Barcelona 1999, 579-582.
- 12. Mulder J., Serdijn W. A., van der Woerd A. C., van Roermund A. H. M.: Dynamic Translinear and Log-Domain Circuits - Analysis and Synthesis. The Springer International Series in Engineering and Computer Science 1999, vol. 481.
- 13. Diepstraten F. M., Kuijstermans F. C. M., Serdijn W. A., van der Kloet P., van Staveren A., Neerhoff F. L., Verhoeven C. J. M., van Roermund A. H. M.: Dynamic behavior of dynamic translinear circuits: the linear time-varying approximation. IEEE Trans. Circuits Systems I: Fundamental Theory and Applications 2001, 48, 11, 1333-1337.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ1-0069-0003