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:
Sep. 17, 1991
Filed:
Jun. 22, 1989
Shigeru Uchiyama, Sayama, JP;
Katsuhiko Obata, Tachikawa, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A vibration of a string is picked up by a pickup to be converted to an electric signal. A pitch extracting circuit obtains pitch data expressing a pitch or a duration of the string vibration from the electric signal. A musical tone generating circuit generates a musical tone having a corresponding tone pitch in accordance with the pitch data. An envelope extracting circuit extracts an envelope from the electric signal detected by the pickup and supplies a signal expressing the envelope to a multiplier. Furthermore, a signal expressing the musical tone is supplied to the multiplier to be multiplied by the signal expressing the envelope. Thus a musical tone having a controlled envelope determined by the extracted envelope is generated.