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Method and device for providing a plurality of audio files with consistent loudness levels but different audio characteristics

  • US 8,571,235 B2
  • Filed: 04/16/2012
  • Issued: 10/29/2013
  • Est. Priority Date: 07/11/2008
  • Status: Expired due to Fees
First Claim
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1. A method for processing an audio file to produce a plurality of modified equalized audio files with different audio characteristics but a consistent level of loudness comprising the steps of:

  • receiving an audio file;

    generating a plurality of equalized audio files from said audio file;

    modifying each equalized audio file to produce the plurality of modified equalized audio files by;

    determining an activity level of the equalized audio file;

    calculating a loudness multiple from a constant and the activity level; and

    multiplying the equalized audio file by the loudness multiple; and

    synchronizing the plurality of modified equalized audio files for playback permitting a user to switch between the plurality of modified equalized audio files during playback.

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