Data processing: generic control systems or specific application – Specific application – apparatus or process – Digital audio data processing system
Reexamination Certificate
2008-01-08
2008-01-08
Tran, Sinh (Department: 2615)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Digital audio data processing system
Reexamination Certificate
active
09521641
ABSTRACT:
A method of performing additive synthesis of digital audio signals using a novel recursive digital oscillator includes the step of receiving digital audio signal frames wherein each digital audio signal frame includes a set of frequency, amplitude, and phase components represented as coefficients of variables in a mathematical expression. Each digital audio signal frame thereby includes a frequency coefficient representation. Converted frequency coefficients are formed by linearly re-mapping the bits of the frequency coefficient representation and adding range extension via a shift amount in order to bias audio reproduction accuracy toward low frequency signals. Additive synthesis is then performed with the converted frequency coefficients.
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Freed Adrian
Hauser John
Hodes Todd
Flanders Andrew C
Michaelson Peter L.
Michaelson & Associates
The Regents of the University of California
Tran Sinh
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