The frequency-response masking approach for highspeed recursive infinite-impulse response (IIR) digital filters is introduced. In this approach, the overall filter consists of a periodic model filter, its power-complementary periodic filter, and two masking filters. The model filters are composed of two all-pass filters in parallel, whereas the masking filters are linear-phase finite-impulse re...

Local dip filters attenuate or enhance features with a specified dip that may vary for each image sample. Because these multi-dimensional filters change with each sample, they should have a small number of coefficients that can be computed efficiently from local dips. They should handle features that are vertical as well as horizontal. They should have efficient and stable inverses that facilit...

In the last decade, several studies have shown that the robustness of ASR systems can be increased when 2D Gabor filters are used to extract specific modulation frequencies from the input pattern. This paper analyzes important design parameters for spectro-temporal features based on a Gabor filter bank: We perform experiments with filters that exhibit different phase sensitivity. Further, we an...

This work concerns with the design and analysis of phase locked loops (PLLs). In the last decade a lot of works have been done about the analysis of PLLs. The phase locked loops are analyzed briefly, second order, third order, and fourth order. In practically the design of 1.3 GHz, 1.9V second order PLL is considered. SPICE simulation program results confirm the theory. Key-Words: Phase Locked ...

The subject of this paper is the design of adaptive synthesis filter bank for enhancement of image reconstruction by exploiting the phase diversity of synthesis filters in subband coding system. This paper for the first time, presents a comprehensive as well as an efficient approach of handling a large number of synthesis filters and reducing the computation complexity of the synthesis filter b...

Halfband lowpass and bandpass filters, versatile building blocks in a multitude of DSP applications, are revisited. Linear-phase FIR and minimum-phase IIR halfband filters for sample rate alteration are recalled, their computational loads are compared, and optimum signal flow graphs are presented. The same comparisons are carried out for corresponding complex halfband filters (Hilbert-transform...

This paper presents the concept of time-varying Butterworth filters with linear phase response. The compensation of the phase characteristics is carried out with the aid of the phase shifter system. The paper shows that it is possible to shorten the transient state in low-pass phasecompensated analog filters by varying in time selected parameters. This paper contains simulation results of the p...

In this paper, we propose a closed-form design of the generalized maximally flat low-pass FIR filters. By representing the transfer function as the Bernstein polynomial form, a siniple generating function of the weighting coefficients is derived. We show that the linear phase maximally flat FIR filters and the nonlinear phase maximally flat halfband FIR. filters are both special cases of the pr...

A sensor fusion methodology for the Gaussian mixtures model is proposed for ballistic target tracking with unknown ballistic coefficients. To improve the estimation accuracy, a track-to-track fusion architecture is proposed to fuse tracks provided by the local interacting multiple model filters. During the fusion process, the duplicate information is removed by considering the first order redun...

there are several varieties of edge detection method. edge detection and edge enhancement techniques play an essential role in interpreting potential field data. some of common methods are: tilt angle filter (ta), total horizontal derivative of tilt angle filter (thdt), theta filter, tdx filter, hyperbolic tilt angle (hta). these filters maximum values are when facing with the edge of an anomal...