Based on the theory of block digital filters and the method of timing equivalence,the implemented circuit for the proposed modulator is derived from the prototype of a conventional single-channel single-loop forth-order 4-bit distributed feedforward ΣΔ modulator,in which the opamps can be shared by tow channels of the first three stages,resulting in simplification in hardware complexity.

Checking remains of cottonseed husk on cotton fabric faces using a digital filter;

Efficient weighted-least-square design and realization of FIR digital filters with variable bandwidth;

Application of digital filter in tracker coordinator nutation frequency testing system;

Design and simulation of digital wave filter in the power system;

The paper is mainly about digital wave filter used to process real-time collected signals and the algorithm to measure the interval between R-R electrocardiograms.

On the basis of traditional simulation wave filter,the paper proposes the algorithm of the digital wave filter.

Relevant digital filters used according to the.

Moreover, in this paper, digital filters and algorithms of microcomputer based protection in power systems based on non-dyadic wavelet transform are presented by using non-dyadic wavelet transform theory.

Butterworth-approximation based design method for recursive complementary digital filters is presented, giving the filter function implemented by a cascade-parallel connection of component all-pass sections.