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. 11, 1991
Filed:
Apr. 20, 1989
Kazuo Masaki, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A musical tone signal generating apparatus is provided for an keyboard electronic musical instrument. This apparatus provides a waveform memory capable of storing musical tone waveform data concerning plural musical tone waveforms each having a different cycle such as a different tone color. The musical tone waveform data can include plural sampling data concerning the musical tone waveform which is picked up by a microphone, for example. Each musical tone waveform is divided into several segments each designated by front (or head) and end addresses. By shifting designation timings of addresses between the front and end addresses of the predetermined segment, two series of musical tone waveform data can be obtained based on the musical tone waveform of the same predetermined segment from the waveform memory. By mixing two series of musical tone waveform data together by a desirable mixing rate, a smooth musical tone waveform corresponding to well-mixed musical tone waveform data can be obtained even when the musical tone waveform of the predetermined segment is repeatedly read out. Then, the apparatus generates a musical tone signal indicative of such smooth musical tone waveform, whereby it is possible to eliminate unnatural portions to be heard in the repeatedly generated musical tone.