Sound display apparatus having separation control

Details Sound display apparatus having separation control Sound display apparatus having separation control

1981-09-24

1983-07-19

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

84464R, A63J 1700, H04Q 1902

Patent

active

043946569

ABSTRACT:
Apparatus for displaying the frequency spectrum of an audio signal. Multiple filters (20, 24, 25) are employed to divide an audio signal into signals each having a distinct frequency spectrum. The individual signals are combined to provide a composite reference signal. Individual comparators (26, 27, 28) compare each signal with the reference signal and individual light circuits are turned on and off in response thereto. A separation control (32) is provided to alter the magnitude of the reference voltage whereby a variation in separation between lights is achieved.

REFERENCES:
patent: 4034299 (1977-07-01), Cho et al.
patent: 4185242 (1980-01-01), Schaible
patent: 4256009 (1981-03-01), Verduin
patent: 4268863 (1981-05-01), Los

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