| /* |
| * 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 WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ |
| #define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ |
| |
| #define ANAL_BLOCKL_MAX 256 // max analysis block length |
| #define HALF_ANAL_BLOCKL 129 // half max analysis block length + 1 |
| #define SIMULT 3 |
| #define END_STARTUP_LONG 200 |
| #define END_STARTUP_SHORT 50 |
| #define FACTOR_Q16 (WebRtc_Word32)2621440 // 40 in Q16 |
| #define FACTOR_Q7 (WebRtc_Word16)5120 // 40 in Q7 |
| #define FACTOR_Q7_STARTUP (WebRtc_Word16)1024 // 8 in Q7 |
| #define WIDTH_Q8 3 // 0.01 in Q8 (or 25 ) |
| //PARAMETERS FOR NEW METHOD |
| #define DD_PR_SNR_Q11 2007 // ~= Q11(0.98) DD update of prior SNR |
| #define ONE_MINUS_DD_PR_SNR_Q11 41 // DD update of prior SNR |
| #define SPECT_FLAT_TAVG_Q14 4915 // (0.30) tavg parameter for spectral flatness measure |
| #define SPECT_DIFF_TAVG_Q8 77 // (0.30) tavg parameter for spectral flatness measure |
| #define PRIOR_UPDATE_Q14 1638 // Q14(0.1) update parameter of prior model |
| #define NOISE_UPDATE_Q8 26 // 26 ~= Q8(0.1) update parameter for noise |
| // probability threshold for noise state in speech/noise likelihood |
| #define ONE_MINUS_PROB_RANGE_Q8 205 // 205 ~= Q8(0.8) |
| #define HIST_PAR_EST 1000 // histogram size for estimation of parameters |
| //FEATURE EXTRACTION CONFIG |
| //bin size of histogram |
| #define BIN_SIZE_LRT 10 |
| //scale parameters: multiply dominant peaks of the histograms by scale factor to obtain |
| // thresholds for prior model |
| #define FACTOR_1_LRT_DIFF 6 //for LRT and spectral difference (5 times bigger) |
| //for spectral_flatness: used when noise is flatter than speech (10 times bigger) |
| #define FACTOR_2_FLAT_Q10 922 |
| //peak limit for spectral flatness (varies between 0 and 1) |
| #define THRES_PEAK_FLAT 24 // * 2 * BIN_SIZE_FLAT_FX |
| //limit on spacing of two highest peaks in histogram: spacing determined by bin size |
| #define LIM_PEAK_SPACE_FLAT_DIFF 4 // * 2 * BIN_SIZE_DIFF_FX |
| //limit on relevance of second peak: |
| #define LIM_PEAK_WEIGHT_FLAT_DIFF 2 |
| #define THRES_FLUCT_LRT 10240 //=20 * inst->modelUpdate; fluctuation limit of LRT feat. |
| //limit on the max and min values for the feature thresholds |
| #define MAX_FLAT_Q10 38912 // * 2 * BIN_SIZE_FLAT_FX |
| #define MIN_FLAT_Q10 4096 // * 2 * BIN_SIZE_FLAT_FX |
| #define MAX_DIFF 100 // * 2 * BIN_SIZE_DIFF_FX |
| #define MIN_DIFF 16 // * 2 * BIN_SIZE_DIFF_FX |
| //criteria of weight of histogram peak to accept/reject feature |
| #define THRES_WEIGHT_FLAT_DIFF 154//(int)(0.3*(inst->modelUpdate)) for flatness and difference |
| // |
| #define STAT_UPDATES 9 // Update every 512 = 1 << 9 block |
| #define ONE_MINUS_GAMMA_PAUSE_Q8 13 // ~= Q8(0.05) update for conservative noise estimate |
| #define GAMMA_NOISE_TRANS_AND_SPEECH_Q8 3 // ~= Q8(0.01) update for transition and noise region |
| #endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ |
