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Finding the Sections of Signals that are the Most Similar

Finding the Sections of Signals that are the Most Similar
  1. How do you find similar signals?
  2. Which refers to the measure of similarity between two signals?
  3. How do you find the correlation between two signals in Matlab?

How do you find similar signals?

Similarity in energy (or power if different lengths): Square the two signals and sum each (and divide by signal length for power). (Since the signals were detrended, this should be signal variance.) Then subtract and take absolute value for a measure of signal variance similarity.

Which refers to the measure of similarity between two signals?

Correlation as measure of similarity.

How do you find the correlation between two signals in Matlab?

r = xcorr( x , y ) returns the cross-correlation of two discrete-time sequences. Cross-correlation measures the similarity between a vector x and shifted (lagged) copies of a vector y as a function of the lag.

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