Automatic tuning device

Details Automatic tuning device Automatic tuning device

1982-09-30

1984-01-24

Goldberg, E. A.

Music

Accessories

Tuning devices

7386242, 318 6, G01G 702

Patent

active

044269072

ABSTRACT:
A stringed musical instrument is provided with an automatic self-tuning device which tightens or loosens those of the instrument's strings which may be out of tune. Each string is provided with an independent automatic tuning device and all of the devices are operated simultaneously on demand to instantly and automatically reset the tension of the strings as required. Each of the devices includes means for sensing the tension of its associated string and means for comparing the sensed tension with a reference tension corresponding to the desired tuning for the string. Means are provided for increasing or decreasing the string tension in response to the nature and magnitude of the compared tensions.
In an alternate version, string tension is sensed and a visual indication is given of an out-of-tune condition. The instrument is tuned in this embodiment manually.

REFERENCES:
patent: 2624027 (1949-12-01), Clark
patent: 3144802 (1961-06-01), Faber, Jr. et al.
patent: 3396284 (1968-08-01), Scherer
patent: 4041832 (1977-08-01), Risch
patent: 4044239 (1977-08-01), Shimauchi et al.

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