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Several applications in digital signal processing demand variable digital filters with arbitrary variable frequency response. However, the design method of filters having variable piecewise large attenuation characteristics in the stopband is not proposed. This paper describes the design method of variable FIR digital filters having changed piecewise large attenuation characteristics in the stopband...
In the previous successive projections (SP) method, we obtained the solution satisfying the prescribed allowable deviation from the desired frequency response. However, this solution is not necessarily an optimum in the Chebyshev sense. In this paper, we propose the improvement of the SP method so that the obtained solution becomes an optimum in the Chebyshev sense. Then, in the proposed method, the...
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