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In this CL we change the signal that controls the updates of the ERLE estimator. Until now, the render signal was used which is not optimum for reverberant signals. In this CL, a reverberation has been added to the the render signal and this new signal has been used for controlling when to update the ERLE estimator. Bug: webrtc:9873 Change-Id: I0ebea3fc208f97aa237af015ba543015d49ed978 Reviewed-on: https://webrtc-review.googlesource.com/c/105660 Reviewed-by: Gustaf Ullberg <gustaf@webrtc.org> Commit-Queue: Jesus de Vicente Pena <devicentepena@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25285}
49 lines
1.6 KiB
C++
49 lines
1.6 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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#ifndef MODULES_AUDIO_PROCESSING_AEC3_RENDER_REVERB_MODEL_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_RENDER_REVERB_MODEL_H_
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/reverb_model.h"
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#include "modules/audio_processing/aec3/vector_buffer.h"
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namespace webrtc {
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// The RenderReverbModel class applies an exponential reverberant model over the
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// render spectrum.
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class RenderReverbModel {
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public:
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RenderReverbModel();
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~RenderReverbModel();
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// Resets the state.
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void Reset();
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// Applies the reverberation model over the render spectrum. It also returns
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// the reverberation render power spectrum in the array reverb_power_spectrum.
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void Apply(const VectorBuffer& spectrum_buffer,
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int delay_blocks,
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float reverb_decay,
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rtc::ArrayView<float> reverb_power_spectrum);
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// Gets the reverberation spectrum that was added to the render spectrum for
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// computing the reverberation render spectrum.
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rtc::ArrayView<const float> GetReverbContributionPowerSpectrum() const {
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return render_reverb_.GetPowerSpectrum();
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}
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private:
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ReverbModel render_reverb_;
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};
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} // namespace webrtc.
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#endif // MODULES_AUDIO_PROCESSING_AEC3_RENDER_REVERB_MODEL_H_
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