D# (1A6D#, 313Hz, 3.20mS) Typical Resonance Simulation:
Oscilloscope charts below show us a clear gap in phase between V-mic and H-mic.
In this case, the resonance direction is not along round-slice-level of cello but along the height(neck - tail pin).
Without endpin(left) vs Steel-pipe endpin floating(right)
Titanium endpin on floor(left) vs 8mm Metal-rod endpin on floor(right)
Cello: Cello-1 (8-year-old)
300 times slower, silent video
Reference post: -- https://advancedendpinholder.blogspot.com/
-- 93..Resonance Direction-A2
-- 93..Cello-1, Cello-2 on A -Resonance Direction-
