Method of recording/reproducing waveform and apparatus for repro

Details Method of recording/reproducing waveform and apparatus for repro Method of recording/reproducing waveform and apparatus for repro

1991-07-18

1994-07-12

Shoop, Jr., William M.

Music

Instruments

Electrical musical tone generation

84DIG9, 84604, G10H 702

Patent

active

053290623

ABSTRACT:
A digital audio signal prerecorded in a DAT is processed by a computer to calculate a compressed difference data array. This compressed difference data array is obtained by compression processing on the basis of a variable compression ratio depending on the magnitude of the variation of the original waveform data array. This compressed difference data array is written in a ROM as waveform data for musical tone generation, and the ROM which stores the waveform data is used as a circuit arrangement for an electronic musical instrument. The electronic musical instrument expands the compressed difference data array on the basis of expansion ratio data, and reproduces it as a waveform data array. This waveform data array is audibly output as a musical tone signal.

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Lapedes, "Dictionary of Scientific and Technical Terms", McGraw Hill Book Company, 1976, p. 307.

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