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_NSX_DEFINES_H_ 12 #define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ 13 14 #define ANAL_BLOCKL_MAX 256 // max analysis block length 15 #define HALF_ANAL_BLOCKL 129 // half max analysis block length + 1 16 #define SIMULT 3 17 #define END_STARTUP_LONG 200 18 #define END_STARTUP_SHORT 50 19 #define FACTOR_Q16 (WebRtc_Word32)2621440 // 40 in Q16 20 #define FACTOR_Q7 (WebRtc_Word16)5120 // 40 in Q7 21 #define WIDTH_Q8 3 // 0.01 in Q8 (or 25 ) 22 //PARAMETERS FOR NEW METHOD 23 #define DD_PR_SNR_Q11 2007 // ~= Q11(0.98) DD update of prior SNR 24 #define ONE_MINUS_DD_PR_SNR_Q11 41 // DD update of prior SNR 25 #define SPECT_FLAT_TAVG_Q14 4915 // (0.30) tavg parameter for spectral flatness measure 26 #define SPECT_DIFF_TAVG_Q8 77 // (0.30) tavg parameter for spectral flatness measure 27 #define PRIOR_UPDATE_Q14 1638 // Q14(0.1) update parameter of prior model 28 #define NOISE_UPDATE_Q8 26 // 26 ~= Q8(0.1) update parameter for noise 29 // probability threshold for noise state in speech/noise likelihood 30 #define ONE_MINUS_PROB_RANGE_Q8 205 // 205 ~= Q8(0.8) 31 #define HIST_PAR_EST 1000 // histogram size for estimation of parameters 32 //FEATURE EXTRACTION CONFIG 33 //bin size of histogram 34 #define BIN_SIZE_LRT 10 35 //scale parameters: multiply dominant peaks of the histograms by scale factor to obtain 36 // thresholds for prior model 37 #define FACTOR_1_LRT_DIFF 6 //for LRT and spectral difference (5 times bigger) 38 //for spectral_flatness: used when noise is flatter than speech (10 times bigger) 39 #define FACTOR_2_FLAT_Q10 922 40 //peak limit for spectral flatness (varies between 0 and 1) 41 #define THRES_PEAK_FLAT 24 // * 2 * BIN_SIZE_FLAT_FX 42 //limit on spacing of two highest peaks in histogram: spacing determined by bin size 43 #define LIM_PEAK_SPACE_FLAT_DIFF 4 // * 2 * BIN_SIZE_DIFF_FX 44 //limit on relevance of second peak: 45 #define LIM_PEAK_WEIGHT_FLAT_DIFF 2 46 #define THRES_FLUCT_LRT 10240 //=20 * inst->modelUpdate; fluctuation limit of LRT feat. 47 //limit on the max and min values for the feature thresholds 48 #define MAX_FLAT_Q10 38912 // * 2 * BIN_SIZE_FLAT_FX 49 #define MIN_FLAT_Q10 4096 // * 2 * BIN_SIZE_FLAT_FX 50 #define MAX_DIFF 100 // * 2 * BIN_SIZE_DIFF_FX 51 #define MIN_DIFF 16 // * 2 * BIN_SIZE_DIFF_FX 52 //criteria of weight of histogram peak to accept/reject feature 53 #define THRES_WEIGHT_FLAT_DIFF 154//(int)(0.3*(inst->modelUpdate)) for flatness and difference 54 // 55 #define STAT_UPDATES 9 // Update every 512 = 1 << 9 block 56 #define ONE_MINUS_GAMMA_PAUSE_Q8 13 // ~= Q8(0.05) update for conservative noise estimate 57 #define GAMMA_NOISE_TRANS_AND_SPEECH_Q8 3 // ~= Q8(0.01) update for transition and noise region 58 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ 59