text: /*
   *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #ifndef MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
  #define MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
  
  #define BLOCKL_MAX          160 // max processing block length: 160
  #define ANAL_BLOCKL_MAX     256 // max analysis block length: 256
  #define HALF_ANAL_BLOCKL    129 // half max analysis block length + 1
  #define NUM_HIGH_BANDS_MAX  2   // max number of high bands: 2
  
  #define QUANTILE            (float)0.25
  
  #define SIMULT              3
  #define END_STARTUP_LONG    200
  #define END_STARTUP_SHORT   50
  #define FACTOR              (float)40.0
  #define WIDTH               (float)0.01
  
  // Length of fft work arrays.
  #define IP_LENGTH (ANAL_BLOCKL_MAX >> 1) // must be at least ceil(2 + sqrt(ANAL_BLOCKL_MAX/2))
  #define W_LENGTH (ANAL_BLOCKL_MAX >> 1)
  
  //PARAMETERS FOR NEW METHOD
  #define DD_PR_SNR           (float)0.98 // DD update of prior SNR
  #define LRT_TAVG            (float)0.50 // tavg parameter for LRT (previously 0.90)
  #define SPECT_FL_TAVG       (float)0.30 // tavg parameter for spectral flatness measure
  #define SPECT_DIFF_TAVG     (float)0.30 // tavg parameter for spectral difference measure
  #define PRIOR_UPDATE        (float)0.10 // update parameter of prior model
  #define NOISE_UPDATE        (float)0.90 // update parameter for noise
  #define SPEECH_UPDATE       (float)0.99 // update parameter when likely speech
  #define WIDTH_PR_MAP        (float)4.0  // width parameter in sigmoid map for prior model
  #define LRT_FEATURE_THR     (float)0.5  // default threshold for LRT feature
  #define SF_FEATURE_THR      (float)0.5  // default threshold for Spectral Flatness feature
  #define SD_FEATURE_THR      (float)0.5  // default threshold for Spectral Difference feature
  #define PROB_RANGE          (float)0.20 // probability threshold for noise state in
                                          // speech/noise likelihood
  #define HIST_PAR_EST         1000       // histogram size for estimation of parameters
  #define GAMMA_PAUSE         (float)0.05 // update for conservative noise estimate
  //
  #define B_LIM               (float)0.5  // threshold in final energy gain factor calculation
  #endif // MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
  