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:
Jul. 24, 1984
Filed:
Apr. 14, 1982
Applicant:
Inventor:
Hiroshi Kitagawa, Iwata, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H / ; G10H / ;
U.S. Cl.
CPC ...
84-121 ; 84-122 ; 84-123 ;
Abstract
In an electronic musical instrument which produces a musical sound through calculating means of a discrete Fourier algorithm by controlling harmonic coefficients, the value of a harmonic number, more than one temporally changing effect function values and a constant value are added together in a predetermined ratio; the added value is divided into a plurality of blocks; the blocks are subjected to data conversion using plural kinds of functions arbitrarily designated corresponding to the respective blocks and outputted in combination; and the outputs are each multiplied by each harmonic coefficient, thereby controlling the harmonic coefficients with time.