Method and apparatus for compressing audio data using a dynamical system having a multi-state dynamical rule set and associated transform basis function
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United States of America Patent
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May 20, 2003
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N/A
app pub date -
Mar 3, 2000
filing date -
Dec 30, 1999
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Expired
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Abstract
Digital audio is transformed using a set of filters derived from the evolving states of a dynamical system (e.g., cellular automata). The ensuing transform coefficients are quantized using a psycho-acoustic model that is a function of a fidelity parameter and the distribution of the transform coefficients in critical bands within the transform space. The technique results in compression of the original audio data. Recovery of a close approximation of the original audio data is obtained via a rapid inverse transformation. An encoding method is provided for accelerating the transmission of audio data through communications networks and storing the data on a digital storage media.
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