[ Benjamin Haass wrote in 140512 MMDigest --

> I thought I would try something different.  I attempted to make
> a MIDI file by analyzing the up and down movement of the piano keys
> themselves.  The results turned out okay and it was a fun exercise
> in programming. ...

That's very, very cool, and for a first pass it's excellent.  There are
a lot of little timing errors, and the mechanical/software engineering
side of my brain wonders what the source of those errors is.  Is the
roll that jumpy (probably not)?  Is it sluggishness or misinterpretation
on the part of the piano mechanism?  Does it have to do with the frame
rate of the video (which is probably pretty slow)?  Is there something
in the software that is causing some kind of rounding error?

It will be fascinating to find out.

Paul Lehrman - Tufts University
Medford, Maine