Invisible wrote:
> Now take a look at the second attachment. This is produced using a 
> propper linear regression. (Simple least squares, apparently.)

In solomn truth, both the simple and fancy algorithms tend to produce 
very similar results, given the same data. Regression fit produces 
smaller error values by getting the phase alignment correct, but they 
both report roughly the same BPM reading.

Also, they are both equally perplexed by missing / additional beat 
signals, so I need to go figure that out...

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