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Method and apparatus for quantizing a signal in a digital system

  • US 6,128,346 A
  • Filed: 04/14/1998
  • Issued: 10/03/2000
  • Est. Priority Date: 04/14/1998
  • Status: Expired due to Fees
First Claim
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1. A method of quantizing a data signal in a digital signal processing system, comprising the steps of:

  • receiving a series of transformed coefficients as the data signal;

    performing a minimum error algorithm on the transformed coefficients to determine paths of minimum error;

    forming a three-dimensional matrix representing the paths of minimum error;

    computing centroids based on the paths of minimum error;

    using the computed centroids as part of a next iteration where the computed centroids are used to represent new quantization states and levels;

    repeating the steps of performing through using until a predetermined optimization of centroids is met; and

    transmitting the centroids as the quantized signal.

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