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Ported NS initialization to NSx

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git-svn-id: http://webrtc.googlecode.com/svn/trunk@77 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
bjornv@google.com 2011-06-15 07:25:10 +00:00
parent 0c6284275f
commit 2204835d4d
3 changed files with 612 additions and 160 deletions
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753
modules/audio_processing/ns/main/source/nsx_core.c
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8
modules/audio_processing/ns/main/source/nsx_core.h
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@ -64,6 +64,14 @@ typedef struct NsxInst_t_
WebRtc_UWord32 sumMagn;
WebRtc_UWord32 curAvgMagnEnergy;
WebRtc_UWord32 timeAvgMagnEnergy;
WebRtc_UWord32 timeAvgMagnEnergyTmp;
WebRtc_UWord32 whiteNoiseLevel; //initial noise estimate
WebRtc_UWord32 initMagnEst[HALF_ANAL_BLOCKL];//initial magnitude spectrum estimate
WebRtc_Word32 pinkNoiseNumerator; //pink noise parameter: numerator
WebRtc_Word32 pinkNoiseExp; //pink noise parameter: power of freq
int minNorm; //smallest normalization factor
int zeroInputSignal; //zero input signal flag
WebRtc_UWord32 prevNoiseU32[HALF_ANAL_BLOCKL]; //noise spectrum from previous frame
WebRtc_UWord16 prevMagnU16[HALF_ANAL_BLOCKL]; //magnitude spectrum from previous frame

11
modules/audio_processing/ns/main/source/nsx_defines.h
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@ -11,10 +11,11 @@
#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: 256/512/1024: 1024 for 30ms
#define ANAL_BLOCKL_MAX 256 // max analysis block length
#define HALF_ANAL_BLOCKL 129 // half max analysis block length + 1
#define SIMULT 3
#define CONVERGED 200
#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 WIDTH_Q8 3 // 0.01 in Q8 (or 25 )
@ -25,7 +26,7 @@
#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
// prob. threshold for noise state in speech/noise likelihood
// 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
@ -33,7 +34,7 @@
#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)
#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)
@ -42,7 +43,7 @@
#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.
#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