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b4161d3c0d
This CL adds support for multichannel in the residual echo estimator code. It also adds placeholder functionality in the surrounding code to ensure that the residual echo estimator receives the require inputs. The changes in the CL has been shown to be bitexact on a large set of mono recordings. Bug: webrtc:10913 Change-Id: I726128ca928648b1dcf36c5f479eb243f3ff3f96 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/155361 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29400}
59 lines
1.5 KiB
C++
59 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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