A method of designing FIR fan filters based on McClellan transformations

Tazawa, Shiro; Honma, Hitoshi; Sagawa, Masahiko

doi:10.1002/ecjc.4430731209

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…In contrast to these conventional methods, the present design algorithm can realize the fan filter whose characteristic is given in the design examples flexibly by parameter setting alone. In the method using the McClellan transform, a fan filter with a sharp cutoff characteristic can be realized rather easily by using higher-order subfilters [7]. In the present design algorithm, the fan filter can be realized if the sample value sequence of the one-dimensional filter and the inclination angle are provided as specifications.…”

Section: Design Examplesmentioning

confidence: 99%

A design technique for two‐dimensional FIR digital filters with noniterative numerical calculation

Tsuchiya¹

2002

Electron Comm Jpn Pt III

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SUMMARYA novel design algorithm is proposed for two-dimensional linear-phase FIR digital filter approximating constant amplitude over the entire passband. The design technique proposed in this paper is an analytical method in which the filter coefficients can be obtained with noniterative numerical calculation. This design technique is based on the idea that the specified filter characteristics of the filters to be realized can be made out using the frequency response of a one-dimensional window function with wellknown characteristics. In this paper, we present a number of design examples to illustrate the flexibility and effectiveness of the proposed technique as a comprehensive design technique.

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Section: Design Examplesmentioning

confidence: 99%

A design technique for two‐dimensional FIR digital filters with noniterative numerical calculation

Tsuchiya¹

2002

Electron Comm Jpn Pt III

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“…However, these techniques are not suit-able for constraining the shapes of all contours simultaneously and are mostly used to approximate the shape of the cuto line only. Design methods, which allow the designer to constrain the shape of all the contours simultaneously, have been presented in 12,13]. In these methods, the desired response of the sub lter are represented in a functional form.…”

Section: Sub Lter Designmentioning

confidence: 99%

Efficient design of digital filters for 2-D and 3-D depth migration

Karam

McClellan

1997

IEEE Trans. Signal Process.

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Two-and three-dimensional depth migration can be performed using one-and twodimensional extrapolation digital lters, respectively. The depth extrapolation is done, one frequency at a time, by convolving the seismic wave eld with a complex-valued, frequencyand velocity-dependent, digital lter. This process requires the design of a complete set of extrapolation lters, one lter for each possible frequency-velocity pair. Instead of independently designing the frequency-and velocity-dependent lters, an e cient procedure is introduced for designing a complete set of one-and two-dimensional extrapolation lters using transformations. The problem of designing a desired set of migration lters is thus reduced to the design of a single one-dimensional lter which is then mapped to produce all the desired one-or two-dimensional migration lters. The new design procedure has the additional advantage that both the one-and two-dimensional migration lters can be realized e ciently and need not have their coe cients precomputed or tabulated.

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