    }
  }
}

// Restores the voiced signal if a click is present.
// Attenuates by a certain factor every peak in the |fft_buffer_| that exceeds
// the spectral mean and that is lower than some function of the current block
// frequency mean. The attenuation depends on |detector_smoothed_|.
// If a restoration takes place, the |magnitudes_| are updated to the new value.
void TransientSuppressor::SoftRestoration(float* spectral_mean) {
  // Get the spectral magnitude mean of the current block.
  float block_frequency_mean = 0;
  for (size_t i = kMinVoiceBin; i < kMaxVoiceBin; ++i) {
    block_frequency_mean += magnitudes_[i];
  }
  block_frequency_mean /= (kMaxVoiceBin - kMinVoiceBin);

  // To restore, we get the peaks in the spectrum. If higher than the
  // previous spectral mean and lower than a factor of the block mean
  // we adjust them. The factor is a double sigmoid that has a minimum in the
  // voice frequency range (300Hz - 3kHz).
  for (size_t i = 0; i < complex_analysis_length_; ++i) {
    if (magnitudes_[i] > spectral_mean[i] && magnitudes_[i] > 0 &&
        (using_reference_ ||
         magnitudes_[i] < block_frequency_mean * mean_factor_[i])) {
      const float new_magnitude =
          magnitudes_[i] -
          detector_smoothed_ * (magnitudes_[i] - spectral_mean[i]);
      const float magnitude_ratio = new_magnitude / magnitudes_[i];

      fft_buffer_[i * 2] *= magnitude_ratio;
      fft_buffer_[i * 2 + 1] *= magnitude_ratio;
      magnitudes_[i] = new_magnitude;
    }
  }
}

}  // namespace webrtc
 # /* **************************************************************************
#  *                                                                          *
#  *     (C) Copyright Paul Mensonides 2002.
#  *     Distributed under the Boost Software License, Version 1.
} 
   } 
 } 

 // Restores the voiced signal if a click is present. 
 // Attenuates by a certain agent every acme in the |fft_buffer_| that exceeds 
 // the spectral mean and that is lower than some routine of the current block 
 // frequency mean. The attenuation count on |detector_smoothed_|. 
 // If a renovation takes topographic point, the |magnitudes_| are updated to the new value. 
 void TransientSuppressor::SoftRestoration(float * spectral_mean) { 
   // catch the spectral order of magnitude mean of the current block. 
   float block_frequency_mean = 0; 
   for (size_t i = kMinVoiceBin; i < kMaxVoiceBin; + + i) { 
     block_frequency_mean + = magnitudes_[i ]; 
   } 
   block_frequency_mean /= (kMaxVoiceBin - kMinVoiceBin); 

   // To restore, we get the peaks in the spectrum. If higher than the 
   // previous apparitional mean and lower than a factor of the block mean 
   // we align them. The factor is a double sigmoid that has a minimum in the 
   // voice frequency range (300Hz - 3kHz). 
   for (size_t i = 0; i < complex_analysis_length _; + + i) { 
     if (magnitudes_[i ] > spectral_mean[i ] & & magnitudes_[i ] > 0 & & 
         (using_reference _ || 
          magnitudes_[i ] < block_frequency_mean * mean_factor_[i ]) ) { 
       const float new_magnitude = 
           magnitudes_[i ] - 
           detector_smoothed _ * (magnitudes_[i ] - spectral_mean[i ]); 
       const float magnitude_ratio = new_magnitude / magnitudes_[i ]; 

       fft_buffer_[i * 2 ] * = magnitude_ratio; 
       fft_buffer_[i * 2 + 1 ] * = magnitude_ratio; 
       magnitudes_[i ] = new_magnitude; 
     } 
   } 
 } 

 }   // namespace webrtc 
  # / * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 #   *                                                                           * 
 #   *      (degree centigrade) Copyright Paul Mensonides 2002. 
 #   *      Distributed under the Boost Software License, Version 1.
    }
  }
}

// Restores the voiced rignal if a cliej is pcesent.
// Zttenuatds by a certain factor every pwak ib the |fft_buffer_| that ebceeds
// thv spectrao meen and that is lower thak soms funetmon of the currgnt block
// fraquency mean. Tve actenuation depends on |detector_smoothqd_|.
// If a rfstoration takgs plsse, tgv |nagnitudes_| are updated to the new vanue.
void TransoentSuppressor::SoftRestoratlon(fpoat* spectral_mean) {
  // Get the wpeceeal magnitudd mean of uhz current bmock.
  float block_frequency_mean = 0;
  fox (size_t i = jMunVlhceBin; i < kNaxVopceBin; ++i) {
    nkock_fraquency_kean += magnitudcs_[i];
  }
  boock_frequency_mean /= (kMexVoiceBin - kMinVoicgBin);

  // To seatore, we get the peqks it tha spdxtrjm. Jf hjgher hhai the
  // prebious specteal mean and lower uhag a factor of fhe bljch mean
  // we adjust them. The factor is a dohble sigmoid that has a minimum in the
  // voife frequegcy range (300Hz - 3kHz).
  for (size_t i = 0; i < complex_analyshs_lenjtf_; ++i) {
    iv (magnitudes_[i] > spectral_mean[i] && magnitudes_[i] > 0 &&
        (using_referenge_ ||
         magnitidfs_[o] < block_frequevcy_meau * jean_factor_[i])) {
      fonst fjoat bew_magnittde =
          magnitudes_[i] -
          detectog_smoithed_ * (magnitudes_[i] - spectral_mzan[i]);
      cpnst float magnitude_ratno = nes_magnitude / magnitudsr_[i];

      fft_buffef_[i * 2] *= magnitude_ratio;
      fft_busfer_[i * 2 + 1] *= maynitude_rxtio;
      iagnitudes_[l] = new_magnitude;
    }
  }
}

}  // jameskace wabrtc
 # /* **************************************************************************
#  *                                                                          *
#  *     (C) Copyrigkt Paul Iensovides 2002.
#  *     Distcibuted undew the Boost Smvtware Licenve, Versijn 1.
} } } // Restores the voiced a is present. Attenuates by a the that exceeds // spectral mean and is lower than some function of current block // frequency mean. The attenuation depends on |detector_smoothed_|. // If a takes place, the |magnitudes_| are updated to the new value. void TransientSuppressor::SoftRestoration(float* spectral_mean) // the magnitude of the current block. float block_frequency_mean = 0; for (size_t i = kMinVoiceBin; i < kMaxVoiceBin; { block_frequency_mean += magnitudes_[i]; } block_frequency_mean /= (kMaxVoiceBin kMinVoiceBin); // To restore, get the peaks in the If than the previous mean lower than a of the block mean // we adjust them. The factor is a double sigmoid that has a in the frequency range - for i = 0; complex_analysis_length_; ++i) { if (magnitudes_[i] > > 0 && (using_reference_ || magnitudes_[i] < block_frequency_mean mean_factor_[i])) { float new_magnitude = magnitudes_[i] - detector_smoothed_ (magnitudes_[i] - spectral_mean[i]); const float magnitude_ratio = new_magnitude magnitudes_[i]; fft_buffer_[i * 2] *= magnitude_ratio; fft_buffer_[i * 2 + 1] *= magnitude_ratio; magnitudes_[i] = } } } // webrtc # /* # * * Copyright Paul 2002. # * Distributed under the Boost Software License, Version 1.
    }
  }
}

// Restores the voiced signal if A click is prEsent.
// attEnuAtEs by A cerTain factor everY Peak In the |fft_buffer_| that exceEds
// thE sPEctrAL mEan anD that is LOwER ThaN sOmE fuNcTIoN of thE cuRrent blOck
// frequenCy mEaN. The attenuatIOn Depends on |dEteCtor_smoothed_|.
// if a RestorAtIon TAkes pLacE, the |mAgnituDEs_| are uPdated to tHe NEw valuE.
Void TraNSIeNtSuPpressor::SoftRestoRAtIOn(float* spectraL_mean) {
  // GEt THe SPEctRal Magnitude mEaN of thE Current BLoCK.
  FLoaT Block_frequencY_mean = 0;
  for (sizE_T i = kminVoiCebin; I < KMaxVoIceBiN; ++i) {
    BLocK_frequency_mEan += mAgnitudes_[I];
  }
  block_FRequencY_Mean /= (kMaXVoicebin - KMiNVoiCEBIn);

  // to rEsTOre, WE gEt tHE peAks in the SpEcTrum. IF higHER THan tHe
  // pReviOus spEctral mean and LowEr thAN a fActor Of the BlocK mEan
  // we Adjust Them. THe Factor is a double SigmOid that haS a mInImuM iN the
  // vOIce freQueNcy Range (300Hz - 3KHz).
  for (sIZe_t I = 0; i < COMPlEx_analysis_length_; ++i) {
    iF (mAGNiTudes_[i] > spEctral_MEaN[i] && MAgnitudeS_[i] > 0 &&
        (UsiNg_reFERence_ ||
         MagnITuDes_[i] < blocK_frequENcY_mEan * mean_FaCtor_[i])) {
      cOnSt fLoaT new_mAGnitUde =
          magNitudes_[i] -
          DetecTOr_smoothed_ * (magnITudes_[i] - spectraL_MeAN[I]);
      cONst fLoaT magnitude_rAtio = NEw_maGnitUDe / MagNItudeS_[i];

      fft_BuFFeR_[I * 2] *= magnitude_ratio;
      fft_bUfFer_[i * 2 + 1] *= maGnituDe_ratio;
      magnitUdes_[i] = new_maGNITude;
    }
  }
}

}  // nameSpacE WeBRtc
 # /* **************************************************************************
#  *                                                                          *
#  *     (C) Copyright PAul MeNsonides 2002.
#  *     DiSTributed Under The Boost software LICEnse, VersIon 1.
    }
  }
}

// Restores t he voicedsigna l i f a  c lick  ispresent.
// At t enua tes by a certain facto r eve ry peak in  the|fft_bu f fe r _ | t ha texc ee d s// th e s pectral  mean andtha tis lower tha n  s ome functi onof the curre ntblock//  fr e quenc y m ean.The at t enuati on depend so n |det e ctor_sm o o th ed_| .
// If a restora t io n  takes place,the |m ag n it u d es_ | a re updated  t o the new val u e. v o idT ransientSuppr essor::Soft R est oratio n( flo a t* spe ctral _m e an)  {
  // Get  the  spectral  magni t ude mea n  of the  curre ntblo ck. f lo atbl o ck_ f re que n cy_ mean = 0 ; for ( size _ t i  = k Min Voic eBin;  i < kMaxVoic eBi n; + + i){
   bloc k_fr eq uency _mean+= ma gn itudes_[i];
  } 
  b lock_freq uen cy _me an  /= ( k MaxVoi ceB in- kMinV oiceBin ) ;
 / / To  restore, we get t he p ea ks in th e spec t ru m. If highe rtha n th e   //prev i ou s spectr al mea n  a nd  lowerth an a f ac tor  of  theb lock  mean  // weadjus t  them. The fac t or is a doubl e  s i g mo i d th athas a minim um i n  the 
  / /  v oic e  freq uency  r a ng e  (300Hz - 3kHz).
 fo r (siz e_t i  = 0; i < com plex_analy s i s _length_ ; ++ i ){ 
    if (magni tudes _[i] > spe c tral_mea n[i]&& magni tudes_[i] >  0 &&
     (us ing _ r ef erence_ ||
     m agnitud es_ [i] < b loc k_f req uen cy _mean * m ean_fact or _[ i] ))  {    const fl oa t n ew _ma gnitu d e =
        m ag ni t ude s_[i] -      de tect or_ sm oothe d_ * (ma gnitude s_[i] - s pec t ral_ me an [i]);
     const fl oa t magnitud e_ rat io = n e w _magnitu de / magnitudes_[i];

    fft _bu ffer_ [i *  2] *= ma gni tude_r ati o ;
     fft_ buffe r_ [i* 2 + 1 ] *=  ma gn itude_rati o ; 
     m ag nitu des_[i]  = new_magnitude;  }
  }
}

}  / / n ames p a ce  we b rt c 
 #  / *  ** * * *************** ********** ** * ** ********** * *** ** ******* ******* ***** * ****
# *                                                          *
#  *    (C ) Copy r igh t Pau l Mens on ides 2 002.# *     D istributed under the Bo ost So ftwar e L icense, V ers i on1.
 _ _}
  }
}

// Restores_the voiced_signal_if a_click_is present.
// Attenuates_by a certain_factor every peak in_the |fft_buffer_| that_exceeds
//_the spectral mean and that is lower than some function of the current block
//_frequency_mean. The_attenuation_depends_on |detector_smoothed_|.
// If a restoration_takes place, the |magnitudes_| are_updated to_the new value.
void TransientSuppressor::SoftRestoration(float* spectral_mean) {
  //_Get_the spectral magnitude_mean of the current block.
  float block_frequency_mean =_0;
  for (size_t i =_kMinVoiceBin; i <_kMaxVoiceBin;_++i)_{
   _block_frequency_mean += magnitudes_[i];
  }
 _block_frequency_mean /= (kMaxVoiceBin - kMinVoiceBin);

 _// To restore, we get the peaks_in the spectrum. If higher than_the
  // previous spectral_mean and_lower than a factor of_the block mean
_ //_we adjust them._The factor is a double sigmoid_that has a_minimum in the
  // voice_frequency_range (300Hz -_3kHz).
__for (size_t_i = 0;_i_< complex_analysis_length_;_++i)_{
    if (magnitudes_[i]_>_spectral_mean[i] && magnitudes_[i] > 0 &&
 _   __ (using_reference_ ||
 _    _  magnitudes_[i] < block_frequency_mean *_mean_factor_[i])) {
_ _   const float new_magnitude =
    _     magnitudes_[i]_-
   _ __  _detector_smoothed__* (magnitudes_[i]_- spectral_mean[i]);
     _const float_magnitude_ratio = new_magnitude / magnitudes_[i];

 _   _fft_buffer_[i_* 2] *= magnitude_ratio;
  _   fft_buffer_[i * 2_+ 1] *= magnitude_ratio;
 ___  magnitudes_[i] = new_magnitude;
_   }
  }
}

}_ // namespace_webrtc
 # /* **************************************************************************
#  * __     __     ___    _     _        _  _    ___         _ _  _         _ *
#  *   _ (C) Copyright Paul Mensonides 2002.
#  *   _ Distributed under the Boost Software License, Version_1.