mirror of
https://github.com/danog/libtgvoip.git
synced 2024-12-02 17:51:06 +01:00
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.
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2012 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_VAD_PITCH_BASED_VAD_H_
|
|
#define MODULES_AUDIO_PROCESSING_VAD_PITCH_BASED_VAD_H_
|
|
|
|
#include <memory>
|
|
|
|
#include "modules/audio_processing/vad/common.h"
|
|
#include "modules/audio_processing/vad/gmm.h"
|
|
|
|
namespace webrtc {
|
|
|
|
class VadCircularBuffer;
|
|
|
|
// Computes the probability of the input audio frame to be active given
|
|
// the corresponding pitch-gain and lag of the frame.
|
|
class PitchBasedVad {
|
|
public:
|
|
PitchBasedVad();
|
|
~PitchBasedVad();
|
|
|
|
// Compute pitch-based voicing probability, given the features.
|
|
// features: a structure containing features required for computing voicing
|
|
// probabilities.
|
|
//
|
|
// p_combined: an array which contains the combined activity probabilities
|
|
// computed prior to the call of this function. The method,
|
|
// then, computes the voicing probabilities and combine them
|
|
// with the given values. The result are returned in |p|.
|
|
int VoicingProbability(const AudioFeatures& features, double* p_combined);
|
|
|
|
private:
|
|
int UpdatePrior(double p);
|
|
|
|
// TODO(turajs): maybe defining this at a higher level (maybe enum) so that
|
|
// all the code recognize it as "no-error."
|
|
static const int kNoError = 0;
|
|
|
|
GmmParameters noise_gmm_;
|
|
GmmParameters voice_gmm_;
|
|
|
|
double p_prior_;
|
|
|
|
std::unique_ptr<VadCircularBuffer> circular_buffer_;
|
|
};
|
|
|
|
} // namespace webrtc
|
|
#endif // MODULES_AUDIO_PROCESSING_VAD_PITCH_BASED_VAD_H_
|