mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-19 16:47:50 +01:00
87a7b82520
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}
52 lines
2.3 KiB
C
52 lines
2.3 KiB
C
/*
|
|
* 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 MODULES_AUDIO_PROCESSING_LEGACY_NS_DEFINES_H_
|
|
#define MODULES_AUDIO_PROCESSING_LEGACY_NS_DEFINES_H_
|
|
|
|
#define BLOCKL_MAX 160 // max processing block length: 160
|
|
#define ANAL_BLOCKL_MAX 256 // max analysis block length: 256
|
|
#define HALF_ANAL_BLOCKL 129 // half max analysis block length + 1
|
|
#define NUM_HIGH_BANDS_MAX 2 // max number of high bands: 2
|
|
|
|
#define QUANTILE 0.25f
|
|
|
|
#define SIMULT 3
|
|
#define END_STARTUP_LONG 200
|
|
#define END_STARTUP_SHORT 50
|
|
#define FACTOR 40.f
|
|
#define WIDTH 0.01f
|
|
|
|
// Length of fft work arrays.
|
|
#define IP_LENGTH \
|
|
(ANAL_BLOCKL_MAX >> 1) // must be at least ceil(2 + sqrt(ANAL_BLOCKL_MAX/2))
|
|
#define W_LENGTH (ANAL_BLOCKL_MAX >> 1)
|
|
|
|
// PARAMETERS FOR NEW METHOD
|
|
#define DD_PR_SNR 0.98f // DD update of prior SNR
|
|
#define LRT_TAVG 0.5f // tavg parameter for LRT (previously 0.90)
|
|
#define SPECT_FL_TAVG 0.30f // tavg parameter for spectral flatness measure
|
|
#define SPECT_DIFF_TAVG 0.30f // tavg parameter for spectral difference measure
|
|
#define PRIOR_UPDATE 0.1f // update parameter of prior model
|
|
#define NOISE_UPDATE 0.9f // update parameter for noise
|
|
#define SPEECH_UPDATE 0.99f // update parameter when likely speech
|
|
#define WIDTH_PR_MAP 4.0f // width parameter in sigmoid map for prior model
|
|
#define LRT_FEATURE_THR 0.5f // default threshold for LRT feature
|
|
#define SF_FEATURE_THR 0.5f // default threshold for Spectral Flatness feature
|
|
#define SD_FEATURE_THR \
|
|
0.5f // default threshold for Spectral Difference feature
|
|
#define PROB_RANGE \
|
|
0.2f // probability threshold for noise state in
|
|
// speech/noise likelihood
|
|
#define HIST_PAR_EST 1000 // histogram size for estimation of parameters
|
|
#define GAMMA_PAUSE 0.05f // update for conservative noise estimate
|
|
//
|
|
#define B_LIM 0.5f // threshold in final energy gain factor calculation
|
|
#endif // MODULES_AUDIO_PROCESSING_LEGACY_NS_DEFINES_H_
|