| /* |
| * 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. |
| */ |
| |
| |
| /* |
| * This header file includes the declarations of the internally used constants. |
| */ |
| |
| #ifndef WEBRTC_VAD_CONST_H_ |
| #define WEBRTC_VAD_CONST_H_ |
| |
| #include "typedefs.h" |
| |
| // TODO(ajm): give these internal-linkage by moving to the appropriate file |
| // where possible, and otherwise tag with WebRtcVad_. |
| |
| // Spectrum Weighting |
| extern const WebRtc_Word16 kSpectrumWeight[]; |
| extern const WebRtc_Word16 kCompVar; |
| // Logarithm constant |
| extern const WebRtc_Word16 kLogConst; |
| extern const WebRtc_Word16 kLog10Const; |
| // Q15 |
| extern const WebRtc_Word16 kNoiseUpdateConst; |
| extern const WebRtc_Word16 kSpeechUpdateConst; |
| // Q8 |
| extern const WebRtc_Word16 kBackEta; |
| // Coefficients used by WebRtcVad_HpOutput, Q14 |
| extern const WebRtc_Word16 kHpZeroCoefs[]; |
| extern const WebRtc_Word16 kHpPoleCoefs[]; |
| // Allpass filter coefficients, upper and lower, in Q15 resp. Q13 |
| extern const WebRtc_Word16 kAllPassCoefsQ15[]; |
| extern const WebRtc_Word16 kAllPassCoefsQ13[]; |
| // Minimum difference between the two models, Q5 |
| extern const WebRtc_Word16 kMinimumDifference[]; |
| // Maximum value when updating the speech model, Q7 |
| extern const WebRtc_Word16 kMaximumSpeech[]; |
| // Minimum value for mean value |
| extern const WebRtc_Word16 kMinimumMean[]; |
| // Upper limit of mean value for noise model, Q7 |
| extern const WebRtc_Word16 kMaximumNoise[]; |
| // Adjustment for division with two in WebRtcVad_SplitFilter |
| extern const WebRtc_Word16 kOffsetVector[]; |
| // Start values for the Gaussian models, Q7 |
| extern const WebRtc_Word16 kNoiseDataWeights[]; |
| extern const WebRtc_Word16 kSpeechDataWeights[]; |
| extern const WebRtc_Word16 kNoiseDataMeans[]; |
| extern const WebRtc_Word16 kSpeechDataMeans[]; |
| extern const WebRtc_Word16 kNoiseDataStds[]; |
| extern const WebRtc_Word16 kSpeechDataStds[]; |
| |
| #endif // WEBRTC_VAD_CONST_H_ |
