Tuning apparatus

Details Tuning apparatus Tuning apparatus

1979-02-06

1982-01-19

Krass, Errol A.

Boots, shoes, and leggings

84454, 84DIG18, 235 92FQ, 328141, 364484, G01R 2300, G10G 702

Patent

active

043120440

ABSTRACT:
Tuning apparatus wherein the instantaneous deviations of a measured sound frequency from a reference sound frequency are averaged to display a mean deviation, thereby to improve the stability of the display. As a display unit, preferably a multidigit segment type display unit is used. The deviation data of the sound is visibly indicated as a positional shift of display elements in the display unit. The tuning apparatus can contain a timepiece therein. A reference frequency oscillating source and the display unit are used as constituents common to the tuning apparatus and the timepiece, whereby a timepiece-containing tuning apparatus which is small in size and light in weight is realized.

REFERENCES:
patent: 2679639 (1954-05-01), Locher
patent: 3146344 (1964-08-01), Palmer
patent: 3712536 (1973-01-01), Griffiths
patent: 4044239 (1977-08-01), Shimauchi et al.
patent: 4073432 (1978-02-01), Schroder
patent: 4144578 (1979-03-01), Mueller et al.
patent: 4196652 (1980-04-01), Raskin

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