blob: 67d15122094060ad339f3ab8ff05c4670ff2673b [file] [log] [blame]
* 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 <math.h>
#include <array>
#include "api/array_view.h"
#include "modules/audio_processing/ns/ns_common.h"
namespace webrtc {
constexpr int kSimult = 3;
// For quantile noise estimation.
class QuantileNoiseEstimator {
QuantileNoiseEstimator(const QuantileNoiseEstimator&) = delete;
QuantileNoiseEstimator& operator=(const QuantileNoiseEstimator&) = delete;
// Estimate noise.
void Estimate(rtc::ArrayView<const float, kFftSizeBy2Plus1> signal_spectrum,
rtc::ArrayView<float, kFftSizeBy2Plus1> noise_spectrum);
std::array<float, kSimult * kFftSizeBy2Plus1> density_;
std::array<float, kSimult * kFftSizeBy2Plus1> log_quantile_;
std::array<float, kFftSizeBy2Plus1> quantile_;
std::array<int, kSimult> counter_;
int num_updates_ = 1;
} // namespace webrtc