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64 lines
3.4 KiB
C
64 lines
3.4 KiB
C
10 years ago
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/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_
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#define ANAL_BLOCKL_MAX 256 /* Max analysis block length */
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#define HALF_ANAL_BLOCKL 129 /* Half max analysis block length + 1 */
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#define SIMULT 3
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#define END_STARTUP_LONG 200
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#define END_STARTUP_SHORT 50
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#define FACTOR_Q16 2621440 /* 40 in Q16 */
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#define FACTOR_Q7 5120 /* 40 in Q7 */
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#define FACTOR_Q7_STARTUP 1024 /* 8 in Q7 */
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#define WIDTH_Q8 3 /* 0.01 in Q8 (or 25 ) */
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/* PARAMETERS FOR NEW METHOD */
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#define DD_PR_SNR_Q11 2007 /* ~= Q11(0.98) DD update of prior SNR */
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#define ONE_MINUS_DD_PR_SNR_Q11 41 /* DD update of prior SNR */
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#define SPECT_FLAT_TAVG_Q14 4915 /* (0.30) tavg parameter for spectral flatness measure */
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#define SPECT_DIFF_TAVG_Q8 77 /* (0.30) tavg parameter for spectral flatness measure */
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#define PRIOR_UPDATE_Q14 1638 /* Q14(0.1) Update parameter of prior model */
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#define NOISE_UPDATE_Q8 26 /* 26 ~= Q8(0.1) Update parameter for noise */
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/* Probability threshold for noise state in speech/noise likelihood. */
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#define ONE_MINUS_PROB_RANGE_Q8 205 /* 205 ~= Q8(0.8) */
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#define HIST_PAR_EST 1000 /* Histogram size for estimation of parameters */
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/* FEATURE EXTRACTION CONFIG */
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/* Bin size of histogram */
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#define BIN_SIZE_LRT 10
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/* Scale parameters: multiply dominant peaks of the histograms by scale factor to obtain. */
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/* Thresholds for prior model */
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#define FACTOR_1_LRT_DIFF 6 /* For LRT and spectral difference (5 times bigger) */
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/* For spectral_flatness: used when noise is flatter than speech (10 times bigger). */
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#define FACTOR_2_FLAT_Q10 922
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/* Peak limit for spectral flatness (varies between 0 and 1) */
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#define THRES_PEAK_FLAT 24 /* * 2 * BIN_SIZE_FLAT_FX */
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/* Limit on spacing of two highest peaks in histogram: spacing determined by bin size. */
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#define LIM_PEAK_SPACE_FLAT_DIFF 4 /* * 2 * BIN_SIZE_DIFF_FX */
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/* Limit on relevance of second peak */
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#define LIM_PEAK_WEIGHT_FLAT_DIFF 2
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#define THRES_FLUCT_LRT 10240 /* = 20 * inst->modelUpdate; fluctuation limit of LRT feat. */
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/* Limit on the max and min values for the feature thresholds */
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#define MAX_FLAT_Q10 38912 /* * 2 * BIN_SIZE_FLAT_FX */
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#define MIN_FLAT_Q10 4096 /* * 2 * BIN_SIZE_FLAT_FX */
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#define MAX_DIFF 100 /* * 2 * BIN_SIZE_DIFF_FX */
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#define MIN_DIFF 16 /* * 2 * BIN_SIZE_DIFF_FX */
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/* Criteria of weight of histogram peak to accept/reject feature */
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#define THRES_WEIGHT_FLAT_DIFF 154 /*(int)(0.3*(inst->modelUpdate)) for flatness and difference */
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#define STAT_UPDATES 9 /* Update every 512 = 1 << 9 block */
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#define ONE_MINUS_GAMMA_PAUSE_Q8 13 /* ~= Q8(0.05) Update for conservative noise estimate */
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#define GAMMA_NOISE_TRANS_AND_SPEECH_Q8 3 /* ~= Q8(0.01) Update for transition and noise region */
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#endif /* WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ */
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