Piano Partial Variances From Mic Placements

Piano Partials: they vary by as much as 3 cents due to mic placements and the inability of an ETD to resolve the spectral lines accurately. The answer is an electronic string sensor, PianoSens, which precisely reads the motion of the string without acoustical variance.

[@musicus7781]

Interesting Experiment!
Can you specify the settings a bit more regarding:
- used microphones and orientation(especially important IMO is off-axis-performance/ coloring - Schoeps has demonstrated this quite nicely)
- distance (maybe it would be better to measure at various listener positions several meters away)
- which "very sophisticated sprectal resolution techniques" were used in Matlab
- at which point of the played note did you capture the soundfile (attack included? length?)

[@PianoSens-ey8jb]

It has nothing to do with mics. It has everything to do with dual modes of resonance and how these modes are resonated on the soundboard and where these resonance spots are on the soundboard, and that is why the sensor is the solution, bypassing the soundboard.