Tuning device for musical instruments and computer program...

Details Tuning device for musical instruments and computer program... Tuning device for musical instruments and computer program...

2006-10-02

2009-06-16

Fletcher, Marlon T (Department: 2837)

Music

Accessories

Tuning devices

C084S455000, C084S616000

Reexamination Certificate

active

07547838

ABSTRACT:
A tuning device includes an analog-to-digital converter for converting sound waves propagated from a piano to an audio signal in synchronism with a sampling signal and a data processor for visualizing a difference between a target pitch of a tone and an actual pitch of the tone; since the sampling signal is less accurate in frequency, the data processor previously determines the frequency difference between a design frequency and an actual frequency of the sampling signal by using a calendar clock signal as a measure; the data processor eliminates noise due to the sampling signal from visual images of the pitch difference, and makes the visual images more accurate.

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“Calibrating the Pitch of Your Pocket PC”, [online], May 30, 2005, p. 1, XP002414249; http://web.archive.org/web/20050530202737/www.reyburn.com/pub/reyburn/rct—demo/PRCT+Blue+calibrate+sheet.pdf.
“Reyburn CyberTuner V. 3.0” [online], Reyburn, Kiel; Jun. 5, 2001 (pp.0-144, XP002414248; http://web.archive.org/web/20010605111511/www.reyburn.com/pub/reyburn/rct—demo/rct3man.pdf.

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