winsinc Matlab script

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winsinc - Applies a windowed sinc filter. USAGE:[xf,Rh,Fh] = winsinc(x,dt,fc,ns,ftype,fo)DESCRIPTION:Windowed Sinc Filter. This is a digital symetric non-recursive filter which can be Lowpass, Highpass, or Bandpass by using a windowed sinc function.Non-Recursive filters are based on convolving the input series with a weight function.Their advantage compared to recursive filters is that they are always stable and matematically simpler.Their disadvantage is that they may require a large number of weights to achieve a desired response.INPUT VARIABLES:x = vectordt = Sampling Intervalfc = Cutoff frequencyns = Width of filter (>>ns produces a steeper cutoffbut is more computationally expensive)2*ns 1 = Order of Filter, (Number of Filter Coef.)win = Window Type:'welch','parzen','hanning','hamming''blackman','lanczos','kaiser'ftype = 'low', 'high' o 'pass'fo = Central Frequency (for bandpass only) OUTPUT VARIABLES:xf = filtered vectorRh = Filter ResponseFh = Frequencies for Filter Response Requirements: · MATLAB Release: R14
Operating system:
Windows / Linux / Mac OS / BSD / Solaris

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