Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2005-03-08
2005-03-08
Fletcher, Marlon T. (Department: 2837)
Music
Instruments
Electrical musical tone generation
C084S609000, C084S616000, C084S634000, C084S649000, C084S650000, C084S654000
Reexamination Certificate
active
06864413
ABSTRACT:
An ensemble system reproduces a performance on an automatic player piano expressed by a set of MIDI music data codes in ensemble with another performance recorded in a compact disc in the form of audio data codes; the ensemble system firstly determines the pitch of the fundamental tone produced through vibrations of a string, then searching the audio data codes for a corresponding tone, calculating a ratio between the pitch of the fundamental tone and the pitch of the corresponding tone, and determining a data read-out speed for the audio data codes; while the MIDI data codes are being supplied to the automatic player piano, the audio data codes are transferred to a speaker system at a speed equal to the product between the standard speed and the ratio so that the piano tones are well harmonized with the electronic tones.
REFERENCES:
patent: 4508001 (1985-04-01), Suzuki
patent: 5189237 (1993-02-01), Koguchi
patent: 5847303 (1998-12-01), Matsumoto
patent: 6160213 (2000-12-01), Arnold et al.
patent: 6737571 (2004-05-01), Furukawa
patent: 20030101862 (2003-06-01), Furukawa
patent: 1 103 973 (2001-05-01), None
Fletcher Marlon T.
Morrison & Foerster / LLP
Yamaha Corporation
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