Music – Instruments – Electrical musical tone generation
Reexamination Certificate
2005-10-11
2009-12-01
Benson, Walter (Department: 2837)
Music
Instruments
Electrical musical tone generation
C084S622000, C084S623000, C084S624000, C084S625000, C084S647000, C084S692000
Reexamination Certificate
active
07626113
ABSTRACT:
Based on the understanding that time-varying characteristics of a tone element, such as an amplitude and pitch, in waveform data acquired through a live performance of a musical instrument include a variation component intended or controllable by a human player and a variation component not intended or non-controllable by the human player, the present invention allows the two components to be adjusted/controlled separately and independently of each other, so as to achieve effective and high-quality control. Discrete variation value train is acquired for at least one particular tone element in original waveform data, and the acquired variation value train is separated, in accordance with a time constant factor, into a “swell” value train of a relatively great time constant and a “fluctuation” value train of a relatively small time constant. The “swell” value train and “fluctuation” value train are variably controlled independently of each other. In this way, high-quality control can be performed on tone elements, such as an amplitude and pitch, included in the sampled waveform data.
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Benson Walter
Chan Kawing
Morrison & Foerster / LLP
Yamaha Corporation
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