Tuning apparatus for stringed instruments

Details Tuning apparatus for stringed instruments Tuning apparatus for stringed instruments

1988-09-02

1989-12-26

Perkey, W. B.

Music

Accessories

Tuning devices

G10G 702

Patent

active

048890294

ABSTRACT:
A guitar tuner includes a manually graspable body with a head projecting outwardly from one end driven by a motor inside the body to rotate about an axis. The head includes a slot shaped opening for grasping the key of a conventional instrument such as a guitar. An input sensor in the body detects a tone from the string of the instrument and converts it to square wave of the detected frequency. This is compared by a microprocessor with the closest adjacent intended frequency of the instrument selected which acts to drive the motor to tighten or loosen the string as required to attain the required frequency. A digital display provides a readout of the number and letter of the string concerned. The user can select any one of a number of different states of the device for use with different instruments or different tunings. The user can also override the automatic string selection in cases where the string is a long way from its required frequency.

REFERENCES:
patent: 3813983 (1974-06-01), Paul
patent: 4088052 (1978-05-01), Hedrick
patent: 4365537 (1982-12-01), Pogoda
patent: 4523506 (1985-06-01), Hollimon
patent: 4589324 (1986-05-01), Aronstein

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