[ 07/07/2018 ] Labels: 20.Vibration-Video
Top plate vibration video is updated by being attached a hologram sheet.
x40 times slower, C(66Hz) pizzicato.
An attached hologram sheet helps us to know the vibration on top plate of cello.
We can observe fundamental C(66Hz) vibrations on the sheet and also some sub vibrations inside, they seem very well linked to the vibration of C string too.
[ 06/28/2018 ] Labels: 60.Sound color
Each chromatic notes around the wolf tone(around E) seemed to have its own waveform shapes.
Let's check up 46 chromatic notes of cello, from Cstring-C(66Hz,4C-0penC) to Astring-A(442Hz,1A-12thA).
This study will probably show us a very rough picture for (1)relation to the sound color of each chromatic notes, (2)resonant chance ratio of endpin on floor and (3)overall endpin-floor effects.
Adopted a 7-year-old cello, down bowing, compared with 3 endpins and 'without pin'.
[ 06/23/2018 ] Labels: 0.Vibration-Video
Vibration of endpin tip on AEH-011.
32 times slower, C66Hz Pizzicato, 10mmD endpins(Steel pipe, Carbon, Titanium).
Advanced Endpin Holder improves resonance and response on cello by mitigating the effects from endpin and floor.
