Musical Synthesizer Combining Deterministic and Stochastic Waveforms

TitleMusical Synthesizer Combining Deterministic and Stochastic Waveforms
Publication TypePatent
Year of Publication1991
AuthorsSerra, X., & Smith J.
Issuing OrganizationUS Patent Office, European Patent Office, & PCT Int.
Application Number431594
AssigneeStanford University
Patent Number5029509
AbstractA musical sound analyzer and synthesizer uses a model that considers a sound to be composed of two types of elements: a deterministic component plus a stochastic component. The deterministic component is represented as a series of sinusoids, with an amplitude and a frequency function for each sinusoid. The stochastic component is represented as a series of magnitude spectral envelopes. From this representation, sounds can be synthesized that, in the absence of modifications, can behave as perceptual identities, that is, they are perceptually equal to the original sound. In addition, stored representations of sounds can be easily modified in a musical synthesizer to create a wide variety of new sounds.
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