The Act of Touch in All Its Diversity: An Analysis And Synthesis of Pianoforte Tone-Production
The Act of Touch in All Its Diversity: An Analysis And Synthesis of Pianoforte Tone-Production
Tobias. Matthay
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Figs. 1 and 3) as " Key" or Implement. In this sense therefore is it, that the Key is applied to the String to move it, — just as another kind of key is applied to a lock to un- lock it. THE KEY. 79 must look upon the Key as a contrivance to help us to translate Energy into Speed. Tlie energy requisite for this purpose is derived from Weight, and from direct Muscular-exertion brought to bear upon the key.' § 5. This work of translation is accomplished by the key through the agency of the compou...nd leverage-system it offers us. As we have already learnt (§ 3, Chapter VIIL), the depres- sion of our end of the key-lever to its fullest extent of about f inch, causes the opposite end (with its felt-covered hammer) to rise some two inches. Now it is obvious that the hammer-end must travel at far greater speed than does our finger-tip in contact with the key, since the hammer traverses so much greater a distance than does our end of the key. {Vide Fig. 3.^ Fio. 3. — Diagrammatic represent?, t ji oi the principle of the compound-leverage involred, with omission of all details of the mechanism.
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