1 edition of **Frequency-sampling design of two-dimensional FIR digital filters with nonuniform samples** found in the catalog.

Frequency-sampling design of two-dimensional FIR digital filters with nonuniform samples

William J. Rozwod

- 224 Want to read
- 31 Currently reading

Published
**1987**
.

Written in English

- Electrical and computer engineering

The Physical Object | |
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Pagination | 81 p. |

Number of Pages | 81 |

ID Numbers | |

Open Library | OL25498454M |

Chapter 3 proposes a nonuniform frequency sampling technique for designing 1-D FIR digital filters. Design examples are presented for various types of filters. Chapter 4 utilizes the idea of the 2-D NDFT to design nonseparable 2-D FIR filters of various : $ The FIR filter design, the realization of frequency sampling method by Matlab Design of FIR Filter Using Frequency Sampling Method Digital Filter Design Made Easy - .

Frequency Sampling Method for FIR Filter Design. The frequency-sampling method for FIR filter design is perhaps the simplest and most direct technique imaginable when a desired frequency response has been specified. It consists simply of uniformly sampling the desired frequency response, and performing an inverse DFT to obtain the corresponding (finite) impulse . The result is applied to the problem of nonuniform frequency sampling design for 2-D FIR filter design, and a few examples of such design are shown. Index Terms (auto-classified) Two-dimensional polynomial interpolation from nonuniform samples. Mathematics of computing. Mathematical analysis. Numerical by:

This is equivalent to first “padding” the samples with 12 samples equal to zero on either end (sample numbers −11 to 0, and to ), then applying the sample filter times, over samples −11 to 1, then −10 to 2, etc., up to samples FIR Filter Design Techniques Arojit Roychowdhury (Roll No: ) Supervisor: Prof P.C. Pandey Abstract This report deals with some of the techniques used to design FIR filters. In the beginning, the windowing method and the frequency sampling methods are discussed in detail with their merits and : P. C. Pandey.

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Frequency-sampling design of two-dimensional FIR digital filters with nonuniform samples. by Rozwod, William : “Nonseparable 2D FIR Filter Design Using Nonuniform Frequency Sampling”, IS&T/SPIE Symposium on Electronic Imaging: Image and Video Processing III, pp.

San Jose, Feb. Node ID:DB ID: 20, Lab: IPL, Target: Proceedings. The present thesis is concerned with design techniques for two-dimensional zero-phase finite impulse response digital filters with nonuniform frequency samples.

Using the freedom and flexibility of the nonuniform frequency sampling, several techniques for taking samples in the frequency plane have been : Valentin Ninov.

We propose a nonuniform frequency sampling method for 2D FIR filter design based on the concept of the nonuniform discrete Fourier transform (NDFT). The NDFT of a 2D sequence is defined as a sequence of samples of its z-transform taken at distinct points located arbitrarily in the (z 1, z 2) by: 3.

Frequency sampling is a classical method for 2-D FIR filters design, which can be subdivided into the uniform and non-uniform approaches.

However. Frequency-sampling design of two-dimensional FIR digital filters with nonuniform samples. By William J. Rozwod. Download PDF (4 MB) distribution is unlimitedVarious approaches to the frequency-sampling design of two-dimensional FIR filters are analyzed.

The IDFT approach requiring uniform sampling on a Cartesian grid is first described Author: William J. Rozwod. Use the frequency sampling method to design a 9-tap lowpass FIR filter with a cutoff frequency of $$\pi$$ radians/sample.

First, we need to find the value of the frequency response samples. Assuming an ideal response, the samples below $$\pi$$ are equal to $$1$$ and the other samples are : Steve Arar. A generalization of the DFT, introduced in this chapter, is the Nonuniform Discrete Fourier Transform (NDFT), which can be used to obtain frequency domain information of a finite-length signal at arbitrarily chosen frequency points.

We provide an introduction to the NDFT and discuss its applications in the design of 1-D and 2-D FIR digital by: Design of FIR Filters An FIR lter of length M is an LTI system with the following difference equation1: y[n] = MX 1 k=0 bk x[n k]: Note that the book changes the role of M here.

Earlier, when discussing rational system functions, M was the number of zeros. Now M is the number of ﬁnonzeroﬂ elements of h[n], which corresponds to at most M 1. We are developing a nonuniform frequency sampling FIR digital filter (lowpass) with linear phase using Matlab and DSP toolbox (I dont remember.

Frequency-Sampling Design of Two-Dimensional FIR Digital Filters With Nonuniform Samples by William J. Rozwod Lieutenant, United States Navy B.S., Rensselaer Polytechnic Institute, Submitted in partial fulfillment of the requirements for the degrees of MASTER OF SCIENCE IN ELECTRICAL ENGINEERING and ELECTRICAL ENGINEER from the.

The frequency-sampling method for FIR filter design is perhaps the simplest and most direct technique imaginable when a desired frequency response has been specified. It consists simply of uniformly sampling the desired frequency response, and performing an inverse DFT to obtain the corresponding (finite) impulse response [, pp.

], [, pp. Several methods have been used by researchers in the design of 2-D FIR digital filters, such as frequency transformation, frequency sampling, windowing, Author: A. Constantinides. sampling algorithm is then applied to the design of digital lters using the well-known impulse invariance method.

It is shown that the nonuniform sampling allows to design a FIR lter whose length is 14 times shorter than what is obtained with uniform sampling; with both lters having similar characteristiscs.

An order M FIR filter can be designed to have arbitrary magnitude and phase response at up to M/2 specified frequencies by solving a system of linear equations. The response is not controlled in.

Use fsamp2 to design an approximately symmetric, two-dimensional bandpass filter with passband between and (normalized frequency, where corresponds to half the sampling frequency, or π radians).

Create a matrix Hd. $\begingroup$ @keith: That term basically adds some delay to the desired frequency response to make it easier for a causal filter to approximate the desired response.

It all depends on the definition of your desired (non-linear) phase if that's necessary or not. If the ideal filter (with the specified desired frequency response) is non-causal, such a delay term will greatly improve the.

The proposed design methodology is a hybridization of the concepts of frequency sampling method and window method of filter design. This proposed design technique produces low-pass FIR filters featuring sharp cut off, exactly marked pass-band and cut off frequencies along with tolerable pass-band ripple and variable stop-band by: 5.

Since elliptical (Cauer) IIR filters and the Remez and Parks-McClellan algorithms for equiripple FIR design require specialized software and do not lend themselves to simple formulas, they are not included.

The third edition includes a new chapter on two-dimensional (2D) filters and a new section on software filter by: 2.

The Frequency Sampling method for filter design uses the IDFT (Inverse Discrete Fourier Transform) of the desired frequency response for the filter coefficients, using the number of samples across the frequency response to be equal to the number of coefficients in the filter. The authors propose a recursive algorithm for computing 2-D polynomial coefficients for the nonsingular case where all the interpolation points are chosen on lines passing through the origin.

The result is applied to the problem of nonuniform frequency sampling design for 2-D FIR filter design, and a few examples of such design are shown.

>Cited by: The Frequency Sampling Method for FIR Design Home. This page shows how to generate an FIR filter with the frequency oversampling method. The samples may be taken from a custom defined magnitude response, or from a predefined filter .Besides, they are guaranteed to be stable.

In this chapter, we use the 2-D NDFT, defined in Chapter 2 (Section ), to design 2-D FIR filters by nonuniform frequency sampling of the specified frequency : Sonali Bagchi, Sanjit K. Mitra.