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:
Jun. 02, 1992
Filed:
Mar. 13, 1990
Applicant:
Inventors:
Kiyomi Takauji, Hamamatsu, JP;
Yutaka Washiyama, Hamamatsu, JP;
Assignee:
Kawai Musical Inst. Mfg. Co. Ltd., Sizuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10H / ; G06F / ;
U.S. Cl.
CPC ...
84605 ; 84607 ; 364723 ;
Abstract
A device for changing and controlling the rate of generating waveform data wherein rate changing data such as phase angle step data corresponding to steps, wherein each pair of contiguous steps has an interval smaller than a preset interval, are necessary. The necessary rate changing data of interval other than the preset rate changing data is obtained by effecting an interpolation from the preset rate changing data. Accordingly, it becomes unnecessary to store the rate changing data obtained by performing the interpolation, and thus, the quantity of the phase angle step data SD to the stored can be greatly reduced.