8be669fd96
This CL adds support for multiple channels in the reverb modelling. As a side effect, it also partly adds multi-channel supports for the sections of the code. Beyond adding the multi-channel support, a bug is fixed as part of this CL. Since the bug fix affects the bitexactness, as a safety precaution the CL includes the ability to override the bugfix. Apart from the contributions from the bugfix, the changes have been verified to be bitexact for a large set of mono recordings. Bug: webrtc:10913 Change-Id: I1f307b532be85ef4182f8db41384f44d40a25219 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/156382 Commit-Queue: Per Åhgren <peah@webrtc.org> Reviewed-by: Sam Zackrisson <saza@webrtc.org> Cr-Commit-Position: refs/heads/master@{#29456}
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
/*
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* Copyright (c) 2017 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/erle_estimator.h"
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#include "modules/audio_processing/aec3/aec3_common.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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ErleEstimator::ErleEstimator(size_t startup_phase_length_blocks_,
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const EchoCanceller3Config& config,
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size_t num_capture_channels)
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: startup_phase_length_blocks__(startup_phase_length_blocks_),
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use_signal_dependent_erle_(config.erle.num_sections > 1),
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fullband_erle_estimator_(config.erle, num_capture_channels),
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subband_erle_estimator_(config, num_capture_channels),
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signal_dependent_erle_estimator_(config, num_capture_channels) {
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Reset(true);
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}
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ErleEstimator::~ErleEstimator() = default;
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void ErleEstimator::Reset(bool delay_change) {
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fullband_erle_estimator_.Reset();
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subband_erle_estimator_.Reset();
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signal_dependent_erle_estimator_.Reset();
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if (delay_change) {
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blocks_since_reset_ = 0;
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}
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}
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void ErleEstimator::Update(
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const RenderBuffer& render_buffer,
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const std::vector<std::array<float, kFftLengthBy2Plus1>>&
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filter_frequency_response,
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rtc::ArrayView<const float> reverb_render_spectrum,
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rtc::ArrayView<const float> capture_spectrum,
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rtc::ArrayView<const float> subtractor_spectrum,
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bool converged_filter,
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bool onset_detection) {
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RTC_DCHECK_EQ(kFftLengthBy2Plus1, reverb_render_spectrum.size());
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RTC_DCHECK_EQ(kFftLengthBy2Plus1, capture_spectrum.size());
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RTC_DCHECK_EQ(kFftLengthBy2Plus1, subtractor_spectrum.size());
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const auto& X2_reverb = reverb_render_spectrum;
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const auto& Y2 = capture_spectrum;
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const auto& E2 = subtractor_spectrum;
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if (++blocks_since_reset_ < startup_phase_length_blocks__) {
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return;
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}
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subband_erle_estimator_.Update(X2_reverb, Y2, E2, converged_filter,
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onset_detection);
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if (use_signal_dependent_erle_) {
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signal_dependent_erle_estimator_.Update(
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render_buffer, filter_frequency_response, X2_reverb, Y2, E2,
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subband_erle_estimator_.Erle(), converged_filter);
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}
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fullband_erle_estimator_.Update(X2_reverb, Y2, E2, converged_filter);
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}
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void ErleEstimator::Dump(
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const std::unique_ptr<ApmDataDumper>& data_dumper) const {
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fullband_erle_estimator_.Dump(data_dumper);
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subband_erle_estimator_.Dump(data_dumper);
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signal_dependent_erle_estimator_.Dump(data_dumper);
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}
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} // namespace webrtc
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