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}
42 lines
1.2 KiB
C++
42 lines
1.2 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/subtractor_output.h"
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#include <numeric>
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namespace webrtc {
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SubtractorOutput::SubtractorOutput() = default;
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SubtractorOutput::~SubtractorOutput() = default;
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void SubtractorOutput::Reset() {
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s_main.fill(0.f);
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e_main.fill(0.f);
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e_shadow.fill(0.f);
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E_main.re.fill(0.f);
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E_main.im.fill(0.f);
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E2_main.fill(0.f);
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E2_shadow.fill(0.f);
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e2_main = 0.f;
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e2_shadow = 0.f;
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y2 = 0.f;
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}
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void SubtractorOutput::UpdatePowers(rtc::ArrayView<const float> y) {
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const auto sum_of_squares = [](float a, float b) { return a + b * b; };
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y2 = std::accumulate(y.begin(), y.end(), 0.f, sum_of_squares);
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e2_main = std::accumulate(e_main.begin(), e_main.end(), 0.f, sum_of_squares);
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e2_shadow =
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std::accumulate(e_shadow.begin(), e_shadow.end(), 0.f, sum_of_squares);
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}
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} // namespace webrtc
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