Music – Instruments – Electrical musical tone generation
Patent
1992-10-15
1995-05-02
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84622, 84627, 84629, 84633, G10H 1057, G10H 112, G10H 146, G10H 712
Patent
active
054121523
ABSTRACT:
Tone waveform data is divided into plural data segments, so that frequency and magnitude of respective spectra contained therein are analyzed for each of the data segments. Analyzation parameters indicative of the frequency and magnitude of the respective spectra for each said data segment which has been obtained through the analyzation is stored into a memory. The analyzation parameter for each data segment is sequentially read out from the memory, and the tone waveform data is reanalyzed on the basis of the read-out parameter. To control the frequency of a resulting tone, a data shift circuit may be provided which serves to shift the value of the frequency data contained in the analyzation parameters. Further, an interpolation circuit may be provided which performs interpolations between frequency data and/or magnitude data of respective spectra of a certain waveform, and frequency data and/or magnitude data of respective spectra of another waveform, so as to form frequency data and magnitude data of respective spectra of a new waveform.
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Fujii Shigeki
Kageyama Yasuo
Ohtani Yasushi
Witkowski Stanley J.
Yamaha Corporation
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