Music – Instruments – Electrical musical tone generation
Patent
1997-01-16
1998-09-15
Shoop, Jr., William M.
Music
Instruments
Electrical musical tone generation
84602, 84603, 84604, 84622, 84627, G10H 700
Patent
active
058082204
ABSTRACT:
The present invention relates to a method for establishing a structured timbre base with a sound wave table and, more particularly, to a method for establishing a structured timbre data file provided for data of sound waves of every kind of instrument stored in a musical synthesizer with a sound wave table to achieve an effect of reducing memory allocation and simplifying hardware complexity, having the steps of: determining a fixed total length; specifying a keynote and obtaining a plurality of sound waves according to the characteristics of different instruments to proceed recording; setting a fixed loop length; searching for a complete sampling loop wave; deleting the end portion of every timbre data file; repeating the complete sampling loop wave several times and adding to the above deleted end portion; adding a mute signal in front of every timbre data file. Therefore, a structured timbre data base is established and every timbre data file with different pitches has an identical total length and loop length.
REFERENCES:
patent: 5288940 (1994-02-01), Izumisawa
patent: 5347087 (1994-09-01), Kozuki
patent: 5666432 (1997-09-01), Izumisawa
Fletcher Marlon T.
Shoop Jr. William M.
Winbond Electronics Corp.
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