C# (278Hz, 1A4C#) Typical Resonance Simulation:
Cello is often impacted by mechanical resonance of endpin.
Left : Without endpin
Right: On floor, Titanium endpin
Cello: Cello-1 (8-year-old)
220 times slower, silent video
Reference post:
--> https://advancedendpinholder.blogspot.com/
--> 92..Resonance Direction-A
--> 92..Cello-1 on A -V/H Amplitude Ratio-
