chromium/third_party/webrtc/modules/audio_processing/ns/noise_estimator.cc

/*
 *  Copyright (c) 2019 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.
 */

#include "modules/audio_processing/ns/noise_estimator.h"

#include <algorithm>

#include "modules/audio_processing/ns/fast_math.h"
#include "rtc_base/checks.h"

namespace webrtc {

namespace {

// Log(i).
constexpr std::array<float, 129> log_table = …;

}  // namespace

NoiseEstimator::NoiseEstimator(const SuppressionParams& suppression_params)
    : … { … }

void NoiseEstimator::PrepareAnalysis() { … }

void NoiseEstimator::PreUpdate(
    int32_t num_analyzed_frames,
    rtc::ArrayView<const float, kFftSizeBy2Plus1> signal_spectrum,
    float signal_spectral_sum) { … }

void NoiseEstimator::PostUpdate(
    rtc::ArrayView<const float> speech_probability,
    rtc::ArrayView<const float, kFftSizeBy2Plus1> signal_spectrum) { … }

}  // namespace webrtc