Method and apparatus for adjusting vibration frequency of vibrat

Details Method and apparatus for adjusting vibration frequency of vibrat Method and apparatus for adjusting vibration frequency of vibrat

1976-02-24

1977-08-23

Morrison, Malcolm A.

Registers

Transfer mechanism

Traveling pawl

84200, 84455, 84DIG18, 324 79R, G10G 702, G05B 1500

Patent

active

040442390

ABSTRACT:
A method and an apparatus for adjusting the vibration frequency of vibrating objects such as piano strings, by stepwise adjustment of the vibration frequency of a vibrating object. The amount of the required adjusting operation in each of the adjustment steps is calculated by the equation:

REFERENCES:
patent: 3180199 (1965-04-01), Anderson
patent: 3472116 (1969-10-01), Schott
patent: 3631756 (1972-01-01), Mackworth-Young
patent: 3881389 (1975-05-01), Allen
patent: 3968719 (1976-07-01), Sanderson
Van Der Wuerd; "New Electronic Tuning Device for Pianos"; J.A.S.A. - vol. 51, No. 6 (part 2); 1972; pp. 2010-2017.

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