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SOUND PROCESSING APPARATUS, METHOD, AND PROGRAM

  • US 20140205111A1
  • Filed: 09/03/2012
  • Published: 07/24/2014
  • Est. Priority Date: 09/15/2011
  • Status: Active Grant
First Claim
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1. A sound processing apparatus including:

  • an input attenuation amount calculation unit configured to calculate an input attenuation amount for attenuating a sound signal, on the basis of a gain setting value representing an adjustment amount of a gain of each frequency band of a sound signal in equalizer processing;

    an estimation gain amplification amount calculation unit configured to calculate an estimation gain amplification amount which is an estimation value of a gain of the sound signal amplified by the equalizer processing, on the basis of the gain setting value and a weight coefficient derived for each of the frequency bands;

    a gain correction amount calculation unit configured to calculate a gain correction amount on the basis of the input attenuation amount and the estimation gain amplification amount;

    an input gain attenuation unit configured to attenuate the sound signal on the basis of the input attenuation amount;

    an equalizer processing unit configured to perform the equalizer processing on the sound signal attenuated by the input gain attenuation unit, on the basis of the gain setting value, and adjust the gain of each of the frequency bands of the sound signal; and

    a gain correction unit configured to correct the gain of the sound signal having been subjected to the equalizer processing, on the basis of the gain correction amount.

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