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. 12, 1989
Filed:
Feb. 10, 1987
Shigenori Oguri, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
An electronic musical instrument having automatic bass chord accompaniment performance in which bass tones are generated in different manners depending on the state of the keyboards of the device. Chord and bass notes are selected using lower and pedal keyboards, respectively. The chord type and root note are identified from the depressed keys of the keyboards. The bass tone is generated with consideration of whether the identified root note coincides with the selected bass note. In the situation where the root note coincides with the bass note, a bass tone is generated based on a stored predetermined bass pattern corresponding to the particular chord type and root note identified. In the situation where the root note does not coincide with the bass note, or if a chord type has not been identified, a bass tone is generated based on the depressed bass note key.