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US 5,396,827 AGranted
Tuner with variable tuning window
AssigneeSabine Musical Manufacturing Company, Inc.
InventorsGary Miller, Doran M. Oster, Charles G. Crampton
Life of this patent
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Abstract
An electronic tuning device has selectable width tuning ranges wherein selected pairs of the LEDs in a single row of LED's are activated, such as being turned on, blinked or flashed, so that the spacing between each activated pair of LEDs indicates the width of the tuning range during a range indicating mode. The sensing of a fundamental frequency of an input tone causes the operation of a corresponding LED in the row of LEDs to indicate the nearest note along with in-tune and out-of-tune conditions.
Claims9
An electronic tuning device for a musical instrument comprising;
- a transducer for converting an acoustic tone played by the musical instrument into electrical signals;
- frequency determination means for determining a fundamental frequency of said electrical signals and thus determining a fundamental frequency of said musical tone;
- in-tune range setting means for selecting one of a plurality of different width ranges for the musical instrument to be in-tune;
- computing means for computing a nearest musical note to said fundamental frequency of said musical tone and for determining an in-tune status whether or not the fundamental frequency is within the selected in-tune range of the nearest musical note;
- a display including a row of individual light sources corresponding to respective musical notes;
- first mode means responsive to the computing means for operating a light source in the row of light sources corresponding to the computed nearest musical note in a manner indicating the in-tune status;
- and
- second mode means for operating the individual light sources in the display to indicate the selected in-tune range.
5 more elements
Dependencies are inferred from the claim text.