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W_hanning
Hanning window.
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Loading LOADSUB ALL FROM "W_COSINE.HTS"
or LOADSUB FROM "MATHLIB.HTS"
or LOADSUB W_hanning FROM "MATHLIB.HTS"
Usage REAL A(*),B(*)
CALL W_hanning(A(*),B(*))
Description
W_hanning multiplies the sequence in array A by the Hanning window function and returns the product in array B. Array A is unmodified. If N is the number of elements in the array A and k is the position in the array B, the formula for the window function, wk, is
 In the above formula, k ranges in value from 0 to N - 1.
The Hanning window is the same as the cosine window with the parameter r set to 0.5.
Hanning window for N=128
W_hanning causes an HTBasic error if its arguments are not of the types listed in the USAGE section, above, or if B contains fewer elements than A.
See Also
Waveform, W_bartlett, W_blackman, W_cosine, W_hamming
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