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False and Correct Audio Correlation Measurements
https://www.beis.de/Elektronik/Correlation/CorrelationCorrectAndWrong.html#:~:text=In%20our%20case%20correlation%20means%20the%20similarity%20of,other%20%28while%20their%20levels%20may%20again%20be%20different%29.
All About Audio Phase and Correlation Meters – Craig ...
https://craiganderton.org/all-about-audio-phase-and-correlation-meters/
In brief, the Correlation meter (often a bar graph included with a Phase meter, but it may be separate) indicates a stereo signal’s mono compatibility. This was of crucial importance when mastering for vinyl, because it could indicate if there were out-of-phase audio components in the audio that could possibly cause the stylus to jump out of its groove.
False and Correct Audio Correlation Measurements
https://www.beis.de/Elektronik/Correlation/CorrelationCorrectAndWrong.html
In our case correlation means the similarity of two audio signals. These two signals can be: +100% correlated, i.e., both signals are identical (except that their levels may be completely different). -100% correlated, i.e., both signals are identical but inverted to each other (while their levels may again be different).
How do I implement cross-correlation to prove two audio ...
https://dsp.stackexchange.com/questions/736/how-do-i-implement-cross-correlation-to-prove-two-audio-files-are-similar
conv(a, b) = ifft(fft(a_and_zeros) * fft(b_and_zeros)) You need to do the zero-padding because the FFT method is actually circularcross-correlation, meaning the signal wraps around at the ends. So you add enough zeros to get rid of the overlap, to simulate a signal that is zero out to infinity.
Autocorrelation (for sound signals)
https://pages.mtu.edu/~suits/autocorrelation.html
Autocorrelation (for sound signals) "Autocorrelation" is used to compare a signal with a time-delayed version of itself. If a signal is periodic, then the signal will be perfectly correlated with a version of itself if the time-delay is an integer number of periods. That fact, along with related experiments, has implicated autocorrelation as a potentially important part of signal …
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