The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1979
Filed:
Oct. 07, 1976
Philip S Capano, Bronx, NY (US);
David Capano, Saratoga Springs, NY (US);
Other;
Abstract
A tuning device for use in tuning a musical instrument includes sensing means operable for sensing a first electrical signal having a certain frequency bandwidth and corresponding to an acoustical musical note produced by the musical instrument, filtering means coupled to the sensing means and operable for filtering the first signal to produce a second electrical signal having a substantially smaller frequency bandwidth, the second signal being representative of the musical note, dividing means coupled to the filtering means and operable for dividing the frequency of the second signal to produce a third electrical signal, generating means operable for producing a reference electrical signal representative of a musical note for tuning the musical instrument, and comparing means coupled to the dividing means and the generating means and operable for comparing the third signal and the reference signal to each other and for producing a fourth electrical signal when the third signal is within a predetermined frequency range from the reference signal. The filtering means is optional for relatively narrow frequency band instruments, such as a piano.