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:
Dec. 04, 1984
Filed:
Oct. 19, 1983
Applicant:
Inventor:
Hiroshi Kitagawa, Iwata, JP;
Assignee:
Kabushiki Kaisha Kawai Gakki Sesisakusho, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H / ;
U.S. Cl.
CPC ...
84-122 ; 84-123 ; 84-124 ;
Abstract
An electronic musical instrument which produces a musical sound by controlling harmonics coefficient and using computing means based on the discrete Fourier transfer. For a fundamental wave, a period function indicated by predetermined period data is generated and, for a harmonic wave, a period function of a period having a predetermined relation to the period of the fundamental wave is generated. By the period function thus obtained, a modulating waveshape memory is read out to obtain modulating data, which is multiplied by a harmonic coefficient.