Unified tone generation in a polyphonic tone synthesizer

Details Unified tone generation in a polyphonic tone synthesizer Unified tone generation in a polyphonic tone synthesizer

1980-01-18

1981-09-01

Truhe, J. V.

Music

Instruments

84 122, 84 124, G01H 100

Patent

active

042864917

ABSTRACT:
In a musical instrument having one or more tone generators in which a plurality of data words corresponding to amplitudes of a corresponding number of evenly spaced points defining the waveform of an audio signal composed of a number of unified tones are generated by the combination of three master data sets. The three master data sets are computed separately from stored sets of even and odd harmonic coefficient values. The master data set values are combined using their symmetric properties and are transferred sequentially to a digital-to-analog converter in repetitive cycles at a rate proportional to the unison pitch of the corresponding keyboard note to produce the tone color of a combination of unified tones.

REFERENCES:
patent: 4085644 (1978-04-01), Deutsch et al.
patent: 4122742 (1978-10-01), Deutsch

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