EFFICIENT TECHNIQUES FOR MODIFYING AUDIO PLAYBACK RATES

  • US 20100100212A1
  • Filed: 12/24/2009
  • Published: 04/22/2010
  • Est. Priority Date: 04/01/2005
  • Status: Active Grant
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First Claim
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1. A computing resource efficient method for playing back a data stream formed of data blocks at a selected playback rate SPR, the method comprising:

  • determining a minimum frequency of data blocks for modification to achieve the selected playback rate SPR;

    computing a data block modification period based upon the minimum frequency;

    receiving the data stream;

    passing through the data block of the received data stream until the occurrence of the data block modification period occurs; and

    modifying only a current data block corresponding to the occurrence of the data block modification period, wherein the selected playback rate SPR is no more than twice a normal playback rate NPR.

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