Music – Instruments – Automatic
Patent
1985-03-27
1986-02-04
Perkey, William B.
Music
Instruments
Automatic
84462, G10F 500, G10G 304
Patent
active
045678049
ABSTRACT:
An automatic playing musical instrument is provided in which the amount of storage medium to be used is substantially decreased. The automatic playing musical instrument is provided with a key information generating circuit for generating key information corresponding to a depressed key among the plurality of keys. A change of the key information is then detected, and a time interval between one of the change and the other which follows immediately after the one of the change is measured so as to generate a time period data representative of the time interval. Each time the change is detected, a musical performance data comprising the key information and the time period is stored in the storage medium, while on the other hand if the change is not detected, no musical performance data is stored thereby saving the amount of the storage medium to be used. The musical performance data stored in the storage medium is reproduced by supplying it to a driving circuit which drives the corresponding key in accordance with the musical performance data.
REFERENCES:
patent: 3865002 (1975-02-01), Shimizu et al.
patent: 3955459 (1976-05-01), Mochida et al.
patent: 4023456 (1977-05-01), Groeschel
patent: 4224644 (1980-09-01), Lewis et al.
patent: 4413292 (1983-11-01), Sugiyama et al.
Endo Akinori
Sawase Takamichi
Nippon Gakki Seizo Kabushiki Kaisha
Perkey William B.
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