ピアノ音におけるレガートの考察
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概要
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The articulation of piano sounds can be varied by the handling of the keys. If we can explain quantitatively the time relation between the keys struck and the aspects of the articulation, we can derive useful guidelines for proper instruction. Our first study, using real piano sounds, investigated the physical conditions under which the range of the sounds considered legato exist. Our second study investigated the relationship between the physiological and mechanical……or piano action……aspects of the performance of legato sounds. Through the co-operative studies of Momose, Furuyama and Shirasuna, the relation between the indications of the articulation and the actual sounds produced has come to be clear. For the experiment, the scale and arpeggio passages were used. It was proved that, under the condition where keys turn back freely, a very deep overlapping is necessary. For instance, in the mid-keyboard range, at the performance of 〓=78 [figure], 78% of the listeners questioned estimated that if one sound overlapped the next sound at a rate of 23%, they judged those sounds to be legato. It was also proved that the faster the performance, the higher the degree of overlap. It has also become clear that the degree of overlap has a tendency to change according to changes in the damper decay, the strenghth of the sounds performed and the range. An experimental examination was also made of the point at which the key struck passed the key released. Given the usual control of the action at a performance of mf, the most favorable point at which the keys may pass eachother, seems to be about 2mm. up from the depressed level.
- 東京芸術大学の論文
東京芸術大学 | 論文
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