Tone generating apparatus incorporating tone control utliizing c

Details Tone generating apparatus incorporating tone control utliizing c Tone generating apparatus incorporating tone control utliizing c

1994-05-23

1996-07-02

Witkowski, Stanley J.

Music

Instruments

Electrical musical tone generation

84622, 84DIG9, 84DIG10, G10H 112, G10H 712

Patent

active

055324240

ABSTRACT:
A tone generator for an electronic musical instrument analyzes an original waveform signal to store results of analysis thereof into a memory. The results of the analysis read out from the memory is interpolated to generate results of the interpolation in synchronism with each sampling clock. The results of the analysis are corrected to cancel a frequency characteristic to be imparted to the results of the analysis when they are interpolated. The results of the analysis are stored into the memory after having been converted. In another form, a reading numerical value formed of an integer part and a decimal part is generated, in synchronism with a predetermined clock timing. The numerical value is variable at a rate proportional to the pitch of a musical tone to be produced. Residual waveform samples read from the memory based on the integer part are interpolated by the use of the decimal part in synchronism with a predetermined clock timing. Synthesized samples are generated based on the interpolated samples and predicted samples generated from the synthesized samples previously generated, for reproducing musical tones.

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patent: 4991484 (1991-02-01), Kawashima
patent: 5136917 (1992-08-01), Kunimoto
patent: 5248845 (1993-09-01), Massie et al.
patent: 5250748 (1993-10-01), Suzuki
patent: 5266734 (1993-11-01), Komano et al.
patent: 5308918 (1994-05-01), Yamauchi et al.
patent: 5359146 (1994-10-01), Funaki et al.

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