chromium/third_party/webrtc/modules/audio_processing/vad/vad_circular_buffer.h

/*
 *  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_VAD_CIRCULAR_BUFFER_H_
#define MODULES_AUDIO_PROCESSING_VAD_VAD_CIRCULAR_BUFFER_H_

#include <memory>

namespace webrtc {

// A circular buffer tailored to the need of this project. It stores last
// K samples of the input, and keeps track of the mean of the last samples.
//
// It is used in class "PitchBasedActivity" to keep track of posterior
// probabilities in the past few seconds. The posterior probabilities are used
// to recursively update prior probabilities.
class VadCircularBuffer { … };

}  // namespace webrtc
#endif  // MODULES_AUDIO_PROCESSING_VAD_VAD_CIRCULAR_BUFFER_H_