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e4db6a1518
This CL adds a functionality that jump-starts the AEC3 shadow filter whenever it performs consistently worse than the main filter. The jump-start is done such that the shadow filter is re-initialized using the main filter coefficients. The effects of this is a significantly more accurate main linear filter which leads to less echo leakage and better transparency Bug: webrtc:9565, chromium:867873 Change-Id: Ie0b23cd536adc7ce96fc3ed2a7db112aec7437f1 Reviewed-on: https://webrtc-review.googlesource.com/90413 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24117}
45 lines
1.4 KiB
C++
45 lines
1.4 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_SUBTRACTOR_OUTPUT_ANALYZER_H_
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#define MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_ANALYZER_H_
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#include "api/array_view.h"
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#include "modules/audio_processing/aec3/subtractor_output.h"
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namespace webrtc {
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// Class for analyzing the properties subtractor output
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class SubtractorOutputAnalyzer {
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public:
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SubtractorOutputAnalyzer() = default;
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~SubtractorOutputAnalyzer() = default;
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// Analyses the subtractor output.
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void Update(const SubtractorOutput& subtractor_output);
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bool ConvergedFilter() const {
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return main_filter_converged_ || shadow_filter_converged_;
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}
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bool DivergedFilter() const { return main_filter_diverged_; }
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// Handle echo path change.
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void HandleEchoPathChange();
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private:
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bool shadow_filter_converged_ = false;
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bool main_filter_converged_ = false;
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bool main_filter_diverged_ = false;
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};
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} // namespace webrtc
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#endif // MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_ANALYZER_H_
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