1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_ 13 14 #define BLOCKL_MAX 160 // max processing block length: 160 15 #define ANAL_BLOCKL_MAX 256 // max analysis block length: 256 16 #define HALF_ANAL_BLOCKL 129 // half max analysis block length + 1 17 #define NUM_HIGH_BANDS_MAX 2 // max number of high bands: 2 18 19 #define QUANTILE (float)0.25 20 21 #define SIMULT 3 22 #define END_STARTUP_LONG 200 23 #define END_STARTUP_SHORT 50 24 #define FACTOR (float)40.0 25 #define WIDTH (float)0.01 26 27 // Length of fft work arrays. 28 #define IP_LENGTH (ANAL_BLOCKL_MAX >> 1) // must be at least ceil(2 + sqrt(ANAL_BLOCKL_MAX/2)) 29 #define W_LENGTH (ANAL_BLOCKL_MAX >> 1) 30 31 //PARAMETERS FOR NEW METHOD 32 #define DD_PR_SNR (float)0.98 // DD update of prior SNR 33 #define LRT_TAVG (float)0.50 // tavg parameter for LRT (previously 0.90) 34 #define SPECT_FL_TAVG (float)0.30 // tavg parameter for spectral flatness measure 35 #define SPECT_DIFF_TAVG (float)0.30 // tavg parameter for spectral difference measure 36 #define PRIOR_UPDATE (float)0.10 // update parameter of prior model 37 #define NOISE_UPDATE (float)0.90 // update parameter for noise 38 #define SPEECH_UPDATE (float)0.99 // update parameter when likely speech 39 #define WIDTH_PR_MAP (float)4.0 // width parameter in sigmoid map for prior model 40 #define LRT_FEATURE_THR (float)0.5 // default threshold for LRT feature 41 #define SF_FEATURE_THR (float)0.5 // default threshold for Spectral Flatness feature 42 #define SD_FEATURE_THR (float)0.5 // default threshold for Spectral Difference feature 43 #define PROB_RANGE (float)0.20 // probability threshold for noise state in 44 // speech/noise likelihood 45 #define HIST_PAR_EST 1000 // histogram size for estimation of parameters 46 #define GAMMA_PAUSE (float)0.05 // update for conservative noise estimate 47 // 48 #define B_LIM (float)0.5 // threshold in final energy gain factor calculation 49 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_ 50