48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
|
|
* 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/histograms.h"
|
|
|
|
namespace webrtc {
|
|
|
|
Histograms::Histograms() {
|
|
Clear();
|
|
}
|
|
|
|
void Histograms::Clear() {
|
|
lrt_.fill(0);
|
|
spectral_flatness_.fill(0);
|
|
spectral_diff_.fill(0);
|
|
}
|
|
|
|
void Histograms::Update(const SignalModel& features_) {
|
|
// Update the histogram for the LRT.
|
|
constexpr float kOneByBinSizeLrt = 1.f / kBinSizeLrt;
|
|
if (features_.lrt < kHistogramSize * kBinSizeLrt && features_.lrt >= 0.f) {
|
|
++lrt_[kOneByBinSizeLrt * features_.lrt];
|
|
}
|
|
|
|
// Update histogram for the spectral flatness.
|
|
constexpr float kOneByBinSizeSpecFlat = 1.f / kBinSizeSpecFlat;
|
|
if (features_.spectral_flatness < kHistogramSize * kBinSizeSpecFlat &&
|
|
features_.spectral_flatness >= 0.f) {
|
|
++spectral_flatness_[features_.spectral_flatness * kOneByBinSizeSpecFlat];
|
|
}
|
|
|
|
// Update histogram for the spectral difference.
|
|
constexpr float kOneByBinSizeSpecDiff = 1.f / kBinSizeSpecDiff;
|
|
if (features_.spectral_diff < kHistogramSize * kBinSizeSpecDiff &&
|
|
features_.spectral_diff >= 0.f) {
|
|
++spectral_diff_[features_.spectral_diff * kOneByBinSizeSpecDiff];
|
|
}
|
|
}
|
|
|
|
} // namespace webrtc
|