Vocal note indicator device

Details Vocal note indicator device Vocal note indicator device

1996-01-05

1998-10-06

Shoop, Jr., William M.

Music

Accessories

Tuning devices

84477R, 84453, 34081545, 34081546, G09F 1300, G10G 100, G10G 702

Patent

active

058179631

ABSTRACT:
The invention is directed to a vocal note indicating device for indicating the note of a vocal pitch signal. The device includes an amplifying means for amplifying an inputted vocal pitch signal and a square wave generator means. The square wave generator means is responsive to the vocal pitch signal from the amplifying means, and provides a square wave output signal substantially having a same period as the vocal pitch signal. A timer means is utilized for determining the period of the square wave and provides an output indicating a period of the square wave output signal. The device uses a microprocessor having a look-up table associated therewith to compare the output from the timer means with the look-up table to provide an output indicating the note and degree of at least one of sharpness and flatness of the inputted vocal pitch signal. A display means includes a plurality of columns of LEDs for displaying the note of the vocal pitch signal. The note is displayed as an illuminated LED from the plurality of columns of LEDs, with the degree of sharpness or flatness being represented as other illuminated LEDs in the same column.

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patent: 4688464 (1987-08-01), Gibson et al.
patent: 4796509 (1989-01-01), Mizuguchi et al.
patent: 5056398 (1991-10-01), Adamson
patent: 5287789 (1994-02-01), Zimmerman
patent: 5396827 (1995-03-01), Miller et al.

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