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1 /*
2  *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
12 #define WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
13 
14 #define BLOCKL_MAX          160 // max processing block length: 160
15 #define ANAL_BLOCKL_MAX     256 // max analysis block length: 256
16 #define HALF_ANAL_BLOCKL    129 // half max analysis block length + 1
17 #define NUM_HIGH_BANDS_MAX  2   // max number of high bands: 2
18 
19 #define QUANTILE            (float)0.25
20 
21 #define SIMULT              3
22 #define END_STARTUP_LONG    200
23 #define END_STARTUP_SHORT   50
24 #define FACTOR              (float)40.0
25 #define WIDTH               (float)0.01
26 
27 // Length of fft work arrays.
28 #define IP_LENGTH (ANAL_BLOCKL_MAX >> 1) // must be at least ceil(2 + sqrt(ANAL_BLOCKL_MAX/2))
29 #define W_LENGTH (ANAL_BLOCKL_MAX >> 1)
30 
31 //PARAMETERS FOR NEW METHOD
32 #define DD_PR_SNR           (float)0.98 // DD update of prior SNR
33 #define LRT_TAVG            (float)0.50 // tavg parameter for LRT (previously 0.90)
34 #define SPECT_FL_TAVG       (float)0.30 // tavg parameter for spectral flatness measure
35 #define SPECT_DIFF_TAVG     (float)0.30 // tavg parameter for spectral difference measure
36 #define PRIOR_UPDATE        (float)0.10 // update parameter of prior model
37 #define NOISE_UPDATE        (float)0.90 // update parameter for noise
38 #define SPEECH_UPDATE       (float)0.99 // update parameter when likely speech
39 #define WIDTH_PR_MAP        (float)4.0  // width parameter in sigmoid map for prior model
40 #define LRT_FEATURE_THR     (float)0.5  // default threshold for LRT feature
41 #define SF_FEATURE_THR      (float)0.5  // default threshold for Spectral Flatness feature
42 #define SD_FEATURE_THR      (float)0.5  // default threshold for Spectral Difference feature
43 #define PROB_RANGE          (float)0.20 // probability threshold for noise state in
44                                         // speech/noise likelihood
45 #define HIST_PAR_EST         1000       // histogram size for estimation of parameters
46 #define GAMMA_PAUSE         (float)0.05 // update for conservative noise estimate
47 //
48 #define B_LIM               (float)0.5  // threshold in final energy gain factor calculation
49 #endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_MAIN_SOURCE_DEFINES_H_
50