diff options
Diffstat (limited to 'src/modules/audio_processing/ns/main/source/ns_core.h')
| -rw-r--r-- | src/modules/audio_processing/ns/main/source/ns_core.h | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/src/modules/audio_processing/ns/main/source/ns_core.h b/src/modules/audio_processing/ns/main/source/ns_core.h deleted file mode 100644 index f72e22bf1c..0000000000 --- a/src/modules/audio_processing/ns/main/source/ns_core.h +++ /dev/null @@ -1,179 +0,0 @@ -/* - * 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_NS_CORE_H_ -#define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NS_CORE_H_ - -#include "defines.h" - -typedef struct NSParaExtract_t_ { - - //bin size of histogram - float binSizeLrt; - float binSizeSpecFlat; - float binSizeSpecDiff; - //range of histogram over which lrt threshold is computed - float rangeAvgHistLrt; - //scale parameters: multiply dominant peaks of the histograms by scale factor to obtain - //thresholds for prior model - float factor1ModelPars; //for lrt and spectral difference - float factor2ModelPars; //for spectral_flatness: used when noise is flatter than speech - //peak limit for spectral flatness (varies between 0 and 1) - float thresPosSpecFlat; - //limit on spacing of two highest peaks in histogram: spacing determined by bin size - float limitPeakSpacingSpecFlat; - float limitPeakSpacingSpecDiff; - //limit on relevance of second peak: - float limitPeakWeightsSpecFlat; - float limitPeakWeightsSpecDiff; - //limit on fluctuation of lrt feature - float thresFluctLrt; - //limit on the max and min values for the feature thresholds - float maxLrt; - float minLrt; - float maxSpecFlat; - float minSpecFlat; - float maxSpecDiff; - float minSpecDiff; - //criteria of weight of histogram peak to accept/reject feature - int thresWeightSpecFlat; - int thresWeightSpecDiff; - -} NSParaExtract_t; - -typedef struct NSinst_t_ { - - WebRtc_UWord32 fs; - int blockLen; - int blockLen10ms; - int windShift; - int outLen; - int anaLen; - int magnLen; - int aggrMode; - const float* window; - float dataBuf[ANAL_BLOCKL_MAX]; - float syntBuf[ANAL_BLOCKL_MAX]; - float outBuf[3 * BLOCKL_MAX]; - - int initFlag; - // parameters for quantile noise estimation - float density[SIMULT * HALF_ANAL_BLOCKL]; - float lquantile[SIMULT * HALF_ANAL_BLOCKL]; - float quantile[HALF_ANAL_BLOCKL]; - int counter[SIMULT]; - int updates; - // parameters for Wiener filter - float smooth[HALF_ANAL_BLOCKL]; - float overdrive; - float denoiseBound; - int gainmap; - // fft work arrays. - int ip[IP_LENGTH]; - float wfft[W_LENGTH]; - - // parameters for new method: some not needed, will reduce/cleanup later - WebRtc_Word32 blockInd; //frame index counter - int modelUpdatePars[4]; //parameters for updating or estimating - // thresholds/weights for prior model - float priorModelPars[7]; //parameters for prior model - float noisePrev[HALF_ANAL_BLOCKL]; //noise spectrum from previous frame - float magnPrev[HALF_ANAL_BLOCKL]; //magnitude spectrum of previous frame - float logLrtTimeAvg[HALF_ANAL_BLOCKL]; //log lrt factor with time-smoothing - float priorSpeechProb; //prior speech/noise probability - float featureData[7]; //data for features - float magnAvgPause[HALF_ANAL_BLOCKL]; //conservative noise spectrum estimate - float signalEnergy; //energy of magn - float sumMagn; //sum of magn - float whiteNoiseLevel; //initial noise estimate - float initMagnEst[HALF_ANAL_BLOCKL]; //initial magnitude spectrum estimate - float pinkNoiseNumerator; //pink noise parameter: numerator - float pinkNoiseExp; //pink noise parameter: power of freq - NSParaExtract_t featureExtractionParams; //parameters for feature extraction - //histograms for parameter estimation - int histLrt[HIST_PAR_EST]; - int histSpecFlat[HIST_PAR_EST]; - int histSpecDiff[HIST_PAR_EST]; - //quantities for high band estimate - float speechProbHB[HALF_ANAL_BLOCKL]; //final speech/noise prob: prior + LRT - float dataBufHB[ANAL_BLOCKL_MAX]; //buffering data for HB - -} NSinst_t; - - -#ifdef __cplusplus -extern "C" { -#endif - -/**************************************************************************** - * WebRtcNs_InitCore(...) - * - * This function initializes a noise suppression instance - * - * Input: - * - inst : Instance that should be initialized - * - fs : Sampling frequency - * - * Output: - * - inst : Initialized instance - * - * Return value : 0 - Ok - * -1 - Error - */ -int WebRtcNs_InitCore(NSinst_t *inst, WebRtc_UWord32 fs); - -/**************************************************************************** - * WebRtcNs_set_policy_core(...) - * - * This changes the aggressiveness of the noise suppression method. - * - * Input: - * - inst : Instance that should be initialized - * - mode : 0: Mild (6 dB), 1: Medium (10 dB), 2: Aggressive (15 dB) - * - * Output: - * - NS_inst : Initialized instance - * - * Return value : 0 - Ok - * -1 - Error - */ -int WebRtcNs_set_policy_core(NSinst_t *inst, int mode); - -/**************************************************************************** - * WebRtcNs_ProcessCore - * - * Do noise suppression. - * - * Input: - * - inst : Instance that should be initialized - * - inFrameLow : Input speech frame for lower band - * - inFrameHigh : Input speech frame for higher band - * - * Output: - * - inst : Updated instance - * - outFrameLow : Output speech frame for lower band - * - outFrameHigh : Output speech frame for higher band - * - * Return value : 0 - OK - * -1 - Error - */ - - -int WebRtcNs_ProcessCore(NSinst_t *inst, - short *inFrameLow, - short *inFrameHigh, - short *outFrameLow, - short *outFrameHigh); - - -#ifdef __cplusplus -} -#endif -#endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NS_CORE_H_ |