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Signed Coefficients

A treatment like that for signed data would require keeping track of the sum of data values. This could be done (for contiguous samples) with a subtractor and an accumulator but there is a better way.

Separate sign bits and subtract. Convert into a counting problem, invert count bits as they become known. The extra +1 gets fed in as a constant, joined with the others!



Stephen W. Nuchia
Mon Dec 11 17:02:42 CST 2000