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Which statistic that you can calculate on a window remains constant on a sine wave with a constant period? This is for a window function for a proprietary filter.

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The solecistic phrase "sine wave with a constant period" suggests that a non-standard meaning of "sine wave" may be intended (by definition, a sine wave has a period which is a property of the wave itself and is not something that can possibly vary); this needs to be clarified. – whuber♦ Dec 29 '11 at 15:25
This was cross-posted at Math, so I'm closing this copy. – whuber♦ Dec 29 '11 at 15:46
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You've cross-posted this on Mathematics, Theoretical CS, Physics and Signal Processing. Please do not spam all the sites in the network with your question. I propose we let the one on signal processing.SE stay open. – Zev Chonoles Dec 29 '11 at 15:55

closed as not a real question by whuber♦ Dec 29 '11 at 15:46

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.

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