Music – Instruments – Electrical musical tone generation
Patent
1997-09-25
1999-08-17
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84634, 434307A, G09B 500, G10H 136
Patent
active
059396547
ABSTRACT:
A karaoke apparatus is configured so that, even when a music piece data having no harmony data is to be performed, a harmony voice signal can be generated. Notes of a length not smaller than a quarter note are extracted from a karaoke performance data and a guide melody data of a music piece data. The distributions of frequencies of occurrence of the tones (C to B) are aggregated. The distributions are compared with the major judgment scale and the minor judgment scale. Then, the data is judged to have a key in which the tonic note (scale note) exists at a place where the highest coincidence is attained. A harmony data is generated on the basis of the result of the key judgment and the guide melody data, and a harmony voice signal is produced based on the harmony data.
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Witkowski Stanley J.
Yamaha Corporation
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