Name

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      COSFILT

Purpose

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      Cosine tapered weighting array to use for FFT filtering.

Category

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Calling Sequence

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      W = COSFILT(DATA, F1, F2, [F3, F4])

Inputs

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      DATA = 1-d data array (only used to find array size). in
      F1 = filter start of rolloff (fraction of sample freq). in
      F2 = end of rolloff (fraction of sample freq). in
          or
      F1 = filter start of rollup (fraction of sample freq). in
      F2 = end of rollup (fraction of sample freq). in
      F3 = filter start of rolloff (fraction of sample freq). in
      F4 = end of rolloff (fraction of sample freq). in
        F1 < F2 < F3 < F4 <= .5

Keyword Parameters

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Outputs

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Common Blocks

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Notes

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Modification History

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      R. Sterner., B. Gotwols 7 Apr, 1987.
      R. Sterner, 2010 May 03 --- Converted arrays from () to [].
      Johns Hopkins University Applied Physics Laboratory.
  Copyright (C) 1987, Johns Hopkins University/Applied Physics Laboratory
  This software may be used, copied, or redistributed as long as it is not
  sold and this copyright notice is reproduced on each copy made. This
  routine is provided as is without any express or implied warranties
  whatsoever. Other limitations apply as described in the file disclaimer.txt.