Measure similarity between signals for pattern matching and analysis. Cross-Correlation

$$ (x \star y)[n] = \sum_{k=-\infty}^{\infty} x[k] y[n + k] $$

Auto-Correlation

$$ R_{xx}[n] = (x \star x)[n] = \sum_{k=-\infty}^{\infty} x[k] x[n + k] $$

Implementation 1import numpy as np 2 3# Cross-correlation 4corr = …

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