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Digital audio signal filtering mechanism and method

  • US 7,016,746 B2
  • Filed: 05/16/2002
  • Issued: 03/21/2006
  • Est. Priority Date: 11/07/1997
  • Status: Expired due to Fees
First Claim
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1. A method for processing an audio signal to produce an encoded audio signal for subsequent decoding and playback of the audio signal, the method comprising:

  • storing audio signal processing data in a memory of a computer;

    retrieving format data from the audio processing data;

    producing a format intermediate audio signal from the audio signal in accordance with the retrieved format data;

    retrieving sample rate data from the signal processing data;

    producing a sample rate converted intermediate audio signal from the format intermediate audio signal in accordance with the sample rate data;

    retrieving filtering data from the signal processing data;

    producing a filtered intermediate audio signal from the sample rate converted intermediate audio signal in accordance with the filtering data;

    retrieving encoding data from the signal processing data;

    producing the encoded audio signal from the filtered intermediate audio signal in accordance with the encoding data.

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