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Machine translation
1. (WO1980000110) PRODUCTION OF CHORD NOTES IN A DIGITAL ORGAN
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000110    International Application No.:    PCT/US1979/000398
Publication Date: 24.01.1980 International Filing Date: 08.06.1979
IPC:
G10H 1/38 (2006.01), G10H 7/00 (2006.01)
Applicants:
Inventors:
Priority Data:
917305 20.06.1978 US
Title (EN) PRODUCTION OF CHORD NOTES IN A DIGITAL ORGAN
(FR) PRODUCTION DE NOTES D"ACCORD DANS UN ORGUE DIGITAL
Abstract: front page image
(EN)The notes of an accompaniment manual of an electronic keyboard musical instrument such as an electronic organ are multiplexed (20, 22, FIG. 1). The key switches are sequentially scanned and the serial information (24) produced is fed into a shift register (30). Digital circuitry (156, 65, 66, 68) reads the position of data in the shift register to determine whether a recognized chord has been played. After recognition of a recognized chord a counter (54, FIG. 2) operating in conjunction with the shift register clock input (36) operates in connection with comparators (198, 200, 202, 204) and frequency generators (212, 214, 216, 218) to produce the necessary notes for the chord played. An automatic mode of operation (438, FIG. 1) also is provided in which only the key corresponding to the root partial of a chord need be played. By utilizing the mathematical relationships in a chord, the simple note played by depression of one key is extrapolated into a chord.
(FR)Les notes d"un manuel d"accompagnement d"un instrument musical a clavier electronique tel qu"un orgue electronique sont multiplexes (20, 22, FIG. 1). Les interrupteurs des touches sont analysees sequentiellement et l"information en serie (24) obtenue est entree dans un registre a decalage (30). Un circuit numerique (56, 65, 66, 68) lit la position des donnees dans le registre a decalage pour determiner si un accord reconnu a ete joue. Apres reconnaissance d"un accord reconnu, un compteur (54, FIG. 2) fonctionnant en association avec l"entree d"horloge du registre a decalage (36) coopere avec des comparateurs (198, 200, 202, 204) et des generateurs de frequence (21, 214, 216, 218) pour produire les notes necessaires a l"accord joue. Il est prevu egalement un mode automatique de fonctionnement (438, FIG. 1) dans lequel seulement la touche correspondante a la racine partielle d"un accord necessaire doit etre actionne. En utilisant les relations mathematiques dans un accord, la note simple jouee en appuyant sur une touche est extrapolee dans un accord.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)