Performs the inverse of the real Walsh Hadamard transform. Details
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X is an array of power of 2 length. |
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Walsh Hadamard Inverse {X} returns the inverse Walsh Hadamard transform of X. |
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error returns any error or warning from the VI. Refer to Signal Processing Error Codes for more information about these conditions. |
If WH{X} denotes the Walsh Hadamard transform of X and WHI{X} denotes the inverse Walsh Hadamard transform, then it is
WHI{WH{X}} = WH{WHI{X}} = X.
Furthermore, the following formula is valid
,
where n is the length of the signal X.