Music – Instruments – Electrical musical tone generation
Patent
1994-06-01
1995-10-17
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
G10H 702
Patent
active
054592798
ABSTRACT:
In an electronic instrument, sound waveform is compressed for efficient storage, while quick response from the depressing of keys till the sounding is assured. The electronic instrument is provided with the waveform ROM for storing the waveform of the start of sounding without compressing. The subsequent waveform is compressed and stored in the waveform ROM. The sound source system having a waveform reproducing portion is also provided for developing the compressed stored waveform. The electronic instrument is further provided with a waveform RAM for temporarily storing the waveform developed by the waveform reproducing portion. When the keys of the electronic instrument are depressed, sounds are generated at first based on the uncompressed waveform data, and the compressed waveform data is concurrently developed in the waveform RAM. After all the uncompressed waveform data is read from the waveform ROM, sounds are subsequently generated based on the waveform data developed by the waveform RAM. The data used immediately after the keys are depressed is not compressed, thereby assuring quick response to the depressing of keys.
REFERENCES:
patent: 5329062 (1994-07-01), Kaneko
Kabushiki Kaisha Kawai Gakki Seisakusho
Witkowski Stanley J.
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