Fundamentally it required a single function – cross-correlation – to measure the similarity of two data samples (audio files in this case). And it turns out that Octave provides it in the box.

Cross-correlation is used to search for a known short signal in a longer signal (detection) or to measure a time delay between two signals with a common source. Auto-correlation example ...

Measuring phase noise with a spectrum analyzer. The primary advantage of dedicated phase-noise analyzers. The cross-correlation method. Using a spectrum analyzer is the oldest, most ...

This paper presents a generalization of the concept of vector correlation proposed by Escoufier (1973) to the context of time series. For two jointly stationary multivariate stochastic processes { Xt} ...

On reviewing examples of very high cross-correlation of HR-SpO 2, we found that many were clearly associated with decline in breathing rate consistent with central apnea ( Figure 3a ) and periodic ...

Lecture Notes-Monograph Series, Vol. 42, Mathematical Statistics and Applications: Festschrift for Constance van Eeden (2003), pp. 397-416 (20 pages) Most of the recent results on tests for ...