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This paper provides an effective method to evaluate the input quantization and multiplication roundoff errors for two-dimensional (2-D) separable-in-denominator recursive digital (SDRD) filters. This work is based on the partial fraction expansion of 2-D SDRD filters [1] and their modular implementation structures [2] proposed by the authors. Equations are derived for the calculation of roundoff errors...
ECG is the main tool used by the physicians for identifying and for interpretation of Heart condition. The ECG should be free from noise and of good quality for the correct diagnosis. In real time situations ECG are corrupted by many types of artifacts. The high frequency noise is one of them. The present paper deals with removing of noise from ECG of high frequency contents with help of Low pass...
In the past few decades, medical and biological researches gained more and more attention. The ever-growing need for such researches caused many medical applications to develop. Collecting data from a living human body is a complex task and needs circumspection. In this paper, specific issues of the most important part of such a data acquisition system is presented, the design of a low pass filter...
The modification of the conventional CIC (cascaded-integrator-comb) filter for rational sample rate conversion (SRC) is presented here, where the conversion factor is a ratio of two mutually prime numbers. Specifically, we consider the case where the decimation factor M can be expressed as a product of two integers. The overall filter realization is based on a stepped triangular form of the CIC impulse...
In this paper, velocity filtering is applied to somatosensory evoked potential (SEP) measurements to remove the stimulus artifact (SA). Using an array of electrodes, velocity information is used as a criterion for discerning the SEP from the SA. The SEP is known to propagate at speeds below 100 m/s due to nerve physiology, whereas the SA propagation mode is electromagnetic, and propagates near the...
In this paper, velocity filtering is applied to somatosensory evoked potential (SEP) measurements to remove the stimulus artifact (SA). Using an array of electrodes, velocity information is used as a criterion for discerning the SEP from the SA. The SEP is known to propagate at speeds below 100 m/s due to nerve physiology, whereas the SA propagation mode is electromagnetic, and propagates near the...
Based on the structured singular value theory, a tractable stability measure is derived for controllers/filters with the finite word length implementation consideration. The optimal realizations of controllers/filters are defined as those that maximize this measure. A sophisticated optimization strategy is presented to provide an efficient method for solving this problem based on the linear matrix...
A transformation technique is proposed for deriving digital-filter system functions from analog transfer functions. The dual bilinear transformation is used to conformally map a continuous-domain transfer function to its discrete-domain counterpart. The resulting discrete-domain system function, when realized, represents a so-called wave digital structure. The versatility of the proposed simplified...
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