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0cbb58e046
This is a reland of 87a7b82520
Original change's description:
> Refactoring of the noise suppressor and adding true multichannel support
>
> This CL adds proper multichannel support to the noise suppressor.
> To accomplish that in a safe way, a full refactoring of the noise
> suppressor code has been done.
>
> Due to floating point precision, the changes made are not entirely
> bitexact. They are, however, very close to being bitexact.
>
> As a safety measure, the former noise suppressor code is preserved
> and a kill-switch is added to allow revering to the legacy noise
> suppressor in case issues arise.
>
> Bug: webrtc:10895, b/143344262
> Change-Id: I0b071011b23265ac12e6d4b3956499d122286657
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158407
> Commit-Queue: Per Åhgren <peah@webrtc.org>
> Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#29646}
Bug: webrtc:10895, b/143344262
Change-Id: I236f1e67bb0baa4e30908a4cf7a8a7bb55fbced3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/158747
Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org>
Commit-Queue: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29663}
74 lines
3.3 KiB
C
74 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_LEGACY_NS_NSX_DEFINES_H_
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#define MODULES_AUDIO_PROCESSING_LEGACY_NS_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_LEGACY_NS_NSX_DEFINES_H_ */
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