When high tones or middle tones are played on the cello, the vibration is generally maximized around the center of the cello body. However, in the case of lower tones, they seem to swing through the whole length of the body and the endpin (see Fig. 28).
When the tip of the endpin is placed on the floor and the vibration is restricted, the counteraction might cause the cello's lower bouts to amplify their swings, and at the same time it might subdue the vibration of the upper part of cello body (on the opposite side).
In any case, the endpin seems to cause the cello's resonance to be greater or less distorted.
低音(C音)の場合、胴体＋エンドピンの全長で振動しているように見えます。エンドピンの先端を床に固定した瞬間、その反作用として底板の振動が増幅させられ、逆に胴体の上部の振動は抑制しているように見える。 ( 参照: Fig.28 )
多かれ少なかれ、チェロの響きはエンドピンによって歪められているようだ。
[ 9/19/2016 ] Labels: 32..Intensity-Bout