mirror of
https://github.com/danog/libtgvoip.git
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5caaaafa42
I'm now using the entire audio processing module from WebRTC as opposed to individual DSP algorithms pulled from there before. Seems to work better this way.
75 lines
3.3 KiB
C
75 lines
3.3 KiB
C
/*
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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 MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_
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#define 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 NUM_HIGH_BANDS_MAX 2 /* Max number of high bands */
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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 \
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4915 /* (0.30) tavg parameter for spectral flatness measure */
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#define SPECT_DIFF_TAVG_Q8 \
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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
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* to obtain. */
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/* Thresholds for prior model */
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#define FACTOR_1_LRT_DIFF \
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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
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* 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
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* 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 \
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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 \
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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 \
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13 /* ~= Q8(0.05) Update for conservative noise estimate */
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#define GAMMA_NOISE_TRANS_AND_SPEECH_Q8 \
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3 /* ~= Q8(0.01) Update for transition and noise region */
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#endif /* MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_NSX_DEFINES_H_ */
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