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An efficient method for the design of FIR filters satisfying prescribed magnitude and phase specifications is described. The method involves formulating an objective function in a quadratic form. The filter coefficients are obtained by solving a system of linear equations which involves either a Toeplitz matrix or a Toeplitz-plus-Hankel matrix. The computational complexity associated with such...
In this paper we propose and discuss a new technique for reducing the spectral redundancy of 2D digital signals through decimation on an arbitrary sublattice. Starting from a second-order analysis of the signal's spectral extension, the method automatically selects a decimation grid that minimizes the overlap between spectral replicas and defines an ideal hexagonal prefilter that maximizes the spectral...
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