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- Summary:
- minimum window length to find the full length of a discretely sampled sinusoid?

Given a discretely sampled horizontal sinusoid of length p, and unknown amplitude, what is the minimal number of consecutive points on a window that is required to correctly estimate its total length, starting at any random point on the wave? Initially I would think it would be either p (full length), or p/2 (half length), right?

What if you found a method to correctly estimate its length p on only 3 sample points: would there be a commercial application for this?

What if you found a method to correctly estimate its length p on only 3 sample points: would there be a commercial application for this?