(19)
(11) EP 0 463 409 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.09.1993 Bulletin 1993/38

(43) Date of publication A2:
02.01.1992 Bulletin 1992/01

(21) Application number: 91109115.5

(22) Date of filing: 04.06.1991
(51) International Patent Classification (IPC)5: G10H 7/00, G10H 1/18
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 28.06.1990 JP 171216/90
28.06.1990 JP 171217/90

(71) Applicant: CASIO COMPUTER COMPANY LIMITED
Shinjuku-ku Tokyo 160 (JP)

(72) Inventors:
  • Usami, Ryuji, c/o Patent Department., Dev. Div.
    Hamura-machi, Nishitama-gun, Tokyo190-11 (JP)
  • Shiba, Kosuke, c/o Patent Department., Dev. Div.
    Hamura-machi, Nishitama-gun, Tokyo190-11 (JP)
  • Daigo, Koichiro, c/o Patent Department., Dev. Div.
    Hamura-machi, Nishitama-gun, Tokyo190-11 (JP)
  • Ogura, Kazuo, c/o Patent Department., Dev. Div.
    Hamura-machi, Nishitama-gun, Tokyo190-11 (JP)
  • Hosoda, Jun, c/o Patent Department., Dev. Div.
    Hamura-machi, Nishitama-gun, Tokyo190-11 (JP)

(74) Representative: KUHNEN, WACKER & PARTNER 
Alois-Steinecker-Strasse 22
85354 Freising
85354 Freising (DE)


(56) References cited: : 
   
       


    (54) Musical tone waveform generation apparatus


    (57) A musical tone signal is generated by CPUs (101, 102) upon execution of a sound source processing program, associated with a modulation method stored in a memory (116). The generated musical tone signal is output at predetermined time intervals from D/A converters (107, 108). As for sound source processing based on the modulation method, at least one operator processing, and algorithm processing for determining an input/output relationship among the operator processing operations are independently executed.






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