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A New Concept of Filters for Biomedical Data Processing Needs

Paper ID Volume ID Publish Year Pages File Format Full-Text
5300 363 2011 11 PDF Available
A New Concept of Filters for Biomedical Data Processing Needs

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.

signal processing; data smoothing; biomedical signals; transient state; time-varying systems
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A New Concept of Filters for Biomedical Data Processing Needs
Database: Elsevier - ScienceDirect
Journal: Biocybernetics and Biomedical Engineering - Volume 31, Issue 1, 2011, Pages 27–37
Physical Sciences and Engineering Chemical Engineering Bioengineering