PatentDOI
Real time digital sound synthesizer
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TLDR
The indicated computations are effected by known techniques on a commercially available computer to translate performer-actuated transducer output signals, designating notes of a composition, into the aforementioned binary-coded digital control signals.Abstract:
Linearly binary-coded digital control signals representing specific time segments of musical sounds are used in part to control stepped ramp signal generators in a digital synthesizer which runs continuously on a fixed program. The ramp signals are used to control amplitude and frequency parameters of multiple digital oscillators that produce respective constituent tones of the musical sound segments. The synthesizer is operable in response to time-multiplexed digital control signals for multiple musical voices, one voice portion of which is also being computed in real time for multiplexing with previously computed and stored digital control signals for other voices. The indicated computations are effected by known techniques on a commercially available computer to translate performer-actuated transducer output signals, designating notes of a composition, into the aforementioned binary-coded digital control signals.read more
Citations
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Journal ArticleDOI
Electronic musical instrument
Nagai Youhei,Okamoto Shimaji +1 more
TL;DR: In this article, the tone signal generated by one of the tone generators is passed through a frequency shifter, while the tone generated by the rest of the keyers is not, and then the two signals are mixed together and finally transduced into sound by a loudspeaker.
Patent
Monolithic PC audio circuit with enhanced digital wavetable audio synthesizer
David Norris,Jeffrey M. Blumenthal,Geoffrey E. Brehmer,Glen W. Brown,Carlin Dru Cabler,Ryan Feemster,David Guercio,Dale E. Gulick,Larry D. Hewitt,Michael Hogan,Alfredo R. Linz,Paul G. Schnizlein,Martin P. Soques,E Michael,David N. Suggs,Alan T. Torok +15 more
TL;DR: In this paper, a digital wavetable audio synthesizer is described, which can generate up to 32 high-quality audio digital signals or voices, including delay-based effects, at either a 44.1 KHz sample rate or at sample rates compatible with a prior art wavetable synthesizer.
Patent
Digital wavetable audio synthesizer with delay-based effects processing
David Norris,David N. Suggs +1 more
TL;DR: In this paper, a digital wavetable audio synthesizer is described, which can generate up to 32 high-quality audio digital signals or voices, including delay-based effects, at either a 44.1 KHz sample rate or at sample rates compatible with a prior art wavetable synthesizer.
Journal ArticleDOI
Electronic musical instrument
TL;DR: In this article, an electronic musical instrument, which enables a player to select by operating a switch any of a plural number of tone colors from a large number of tones originally preset in the musical instrument in a form of tone color data stored in a memory unit, is described.
PatentDOI
Wavetable audio synthesizer with low frequency oscillators for tremolo and vibrato effects
TL;DR: A digital wavetable audio synthesizer with an LFO generator is described, which can generate up to 32 high-quality audio digital signals or voices, including delay-based effects.
References
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Book
The technology of computer music
TL;DR: The invention relates to a magnetic valve assembly of the type in which an energized armature moves a valveclosure member to an open position and a load spring in compression maintains the valve closure member closed when the armature is nonenergized.
Journal ArticleDOI
Signal processing aspects of computer music: A survey
TL;DR: The use of analyis of natural sounds for synthesis, the use of speech and vocoder techniques, methods of artificial reverberation, theUse of discrete summation formulae for highly efficient synthesis, and the role of special-purpose hardware in digital music synthesis are discussed.
Patent
Method of synthesizing a musical sound
TL;DR: In this paper, a function to control the bandwidth and evolution in time of the partial frequencies of synthesized sound is proposed. But the modulating index is related to a function.
Journal ArticleDOI
GROOVE—a program to compose, store, and edit functions of time
Max V. Mathews,F. R. Moore +1 more
TL;DR: A program which makes possible creating, storing, reproducing, and editing functions of time that can be used for a variety of purposes such as the control of machine tools or sound synthesizers or anything a person normally controls.
Patent
Electronic musical instrument employing waveshape memories
TL;DR: In this paper, a dynamic logic system was proposed to enable simultaneous reproduction of a plurality of musical tones in an electronic musical instrument, in which a key switch produces a key data signal indicative of the identification name of the key switch.
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Waveform table modification instrument and method for generating musical sound
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