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:
Nov. 23, 1993
Filed:
Apr. 19, 1990
Kiyomi Takauji, Hamamatsu, JP;
Kawai Musical Inst. Mfg. Co., Ltd., Sizuoka, JP;
Abstract
A parameter signal generator including a parameter generating information storing unit for storing parameter generating information necessary for generating a parameter signal, and a parameter signal generating unit for generating a parameter signal. The parameter generating information is serially read from the parameter generating information storing unit and the thus-read parameter generating information is preset in a parameter signal generating unit other than the parameter generating information storing unit. Therefore, the parameter signal generator includes a storing unit other than the parameter signal generating unit, and accordingly, a general-use memory can be employed as the storing unit, to substantially lower cost. The processing of generating and radiating musical sounds can be performed at a practically required speed by employing a high speed processor as a central processing unit. Further, in the parameter signal generator, the length of time necessary for repeatedly generating a part or all of the parameter signal is measured, and when the measured length of time becomes equal to a predetermined length of time, the processing of repeatedly generating a part or all of the parameter signal is stopped. Accordingly, the length of time needed for repeatedly generating the parameter signal can be kept at a constant value, regardless of the pitches of musical sounds to be radiated, and thus, the inclusion in a musical sound radiated by the electronic musical instrument of an unnecessary changing factor, in response to the change of the pitch thereof, can be prevented.