48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
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/*
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* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "modules/audio_processing/ns/histograms.h"
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namespace webrtc {
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Histograms::Histograms() {
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Clear();
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}
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void Histograms::Clear() {
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lrt_.fill(0);
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spectral_flatness_.fill(0);
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spectral_diff_.fill(0);
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}
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void Histograms::Update(const SignalModel& features_) {
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// Update the histogram for the LRT.
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constexpr float kOneByBinSizeLrt = 1.f / kBinSizeLrt;
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if (features_.lrt < kHistogramSize * kBinSizeLrt && features_.lrt >= 0.f) {
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++lrt_[kOneByBinSizeLrt * features_.lrt];
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}
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// Update histogram for the spectral flatness.
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constexpr float kOneByBinSizeSpecFlat = 1.f / kBinSizeSpecFlat;
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if (features_.spectral_flatness < kHistogramSize * kBinSizeSpecFlat &&
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features_.spectral_flatness >= 0.f) {
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++spectral_flatness_[features_.spectral_flatness * kOneByBinSizeSpecFlat];
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}
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// Update histogram for the spectral difference.
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constexpr float kOneByBinSizeSpecDiff = 1.f / kBinSizeSpecDiff;
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if (features_.spectral_diff < kHistogramSize * kBinSizeSpecDiff &&
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features_.spectral_diff >= 0.f) {
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++spectral_diff_[features_.spectral_diff * kOneByBinSizeSpecDiff];
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}
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}
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} // namespace webrtc
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