/*
* 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_