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Loudness maximization with constrained loudspeaker excursion

  • US 8,855,322 B2
  • Filed: 08/09/2011
  • Issued: 10/07/2014
  • Est. Priority Date: 01/12/2011
  • Status: Active Grant
First Claim
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1. A method of constraining loudspeaker excursion in a mobile station, comprising:

  • receiving an input audio signal at the mobile station;

    transforming, in the digital domain, the input audio signal into a plurality of subband signals in the equal rectangular band (ERB) scale;

    determining a peak excursion, in the digital domain, of a loudspeaker of the mobile station, for either one or more of the entire ERB subbands or certain portions of one or more ERB subbands;

    performing signal processing on the subband signals based on the peak excursion and a maximum loudspeaker excursion to limit the excursion of the loudspeaker; and

    combining and outputting the signal processed subband signals to the loudspeaker.

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