60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018 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/aec3/reverb_model.h"
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#include <stddef.h>
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#include <algorithm>
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#include <functional>
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#include "api/array_view.h"
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namespace webrtc {
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ReverbModel::ReverbModel() {
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Reset();
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}
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ReverbModel::~ReverbModel() = default;
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void ReverbModel::Reset() {
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reverb_.fill(0.);
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}
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void ReverbModel::UpdateReverbNoFreqShaping(
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rtc::ArrayView<const float> power_spectrum,
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float power_spectrum_scaling,
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float reverb_decay) {
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if (reverb_decay > 0) {
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// Update the estimate of the reverberant power.
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for (size_t k = 0; k < power_spectrum.size(); ++k) {
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reverb_[k] = (reverb_[k] + power_spectrum[k] * power_spectrum_scaling) *
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reverb_decay;
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}
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}
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}
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void ReverbModel::UpdateReverb(
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rtc::ArrayView<const float> power_spectrum,
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rtc::ArrayView<const float> power_spectrum_scaling,
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float reverb_decay) {
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if (reverb_decay > 0) {
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// Update the estimate of the reverberant power.
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for (size_t k = 0; k < power_spectrum.size(); ++k) {
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reverb_[k] =
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(reverb_[k] + power_spectrum[k] * power_spectrum_scaling[k]) *
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reverb_decay;
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}
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}
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}
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} // namespace webrtc
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