14c11a4712
This CL adds detection of components in the render signal that are of strong narrowband nature and therefore may cause problems for the AEC. This CL also adds functionality in the echo suppressor to suppress these signals BUG=webrtc:7967 Review-Url: https://codereview.webrtc.org/2980493002 Cr-Commit-Position: refs/heads/master@{#18968}
95 lines
3.3 KiB
C++
95 lines
3.3 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 "webrtc/modules/audio_processing/aec3/suppression_gain.h"
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#include "webrtc/rtc_base/checks.h"
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#include "webrtc/system_wrappers/include/cpu_features_wrapper.h"
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#include "webrtc/test/gtest.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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namespace aec3 {
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#if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID)
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// Verifies that the check for non-null output gains works.
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TEST(SuppressionGain, NullOutputGains) {
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std::array<float, kFftLengthBy2Plus1> E2;
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std::array<float, kFftLengthBy2Plus1> R2;
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std::array<float, kFftLengthBy2Plus1> N2;
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E2.fill(0.f);
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R2.fill(0.f);
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N2.fill(0.f);
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float high_bands_gain;
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EXPECT_DEATH(SuppressionGain(DetectOptimization())
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.GetGain(E2, R2, N2, RenderSignalAnalyzer(), false,
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std::vector<std::vector<float>>(
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3, std::vector<float>(kBlockSize, 0.f)),
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false, &high_bands_gain, nullptr),
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"");
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}
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#endif
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// Does a sanity check that the gains are correctly computed.
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TEST(SuppressionGain, BasicGainComputation) {
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SuppressionGain suppression_gain(DetectOptimization());
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RenderSignalAnalyzer analyzer;
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float high_bands_gain;
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std::array<float, kFftLengthBy2Plus1> E2;
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std::array<float, kFftLengthBy2Plus1> R2;
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std::array<float, kFftLengthBy2Plus1> N2;
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std::array<float, kFftLengthBy2Plus1> g;
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std::vector<std::vector<float>> x(1, std::vector<float>(kBlockSize, 0.f));
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// Ensure that a strong noise is detected to mask any echoes.
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E2.fill(10.f);
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R2.fill(0.1f);
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N2.fill(100.f);
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for (int k = 0; k < 10; ++k) {
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suppression_gain.GetGain(E2, R2, N2, analyzer, false, x, false,
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&high_bands_gain, &g);
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}
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std::for_each(g.begin(), g.end(),
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[](float a) { EXPECT_NEAR(1.f, a, 0.001); });
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// Ensure that a strong nearend is detected to mask any echoes.
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E2.fill(100.f);
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R2.fill(0.1f);
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N2.fill(0.f);
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for (int k = 0; k < 10; ++k) {
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suppression_gain.GetGain(E2, R2, N2, analyzer, false, x, false,
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&high_bands_gain, &g);
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}
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std::for_each(g.begin(), g.end(),
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[](float a) { EXPECT_NEAR(1.f, a, 0.001); });
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// Ensure that a strong echo is suppressed.
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E2.fill(1000000000.f);
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R2.fill(10000000000000.f);
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N2.fill(0.f);
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for (int k = 0; k < 10; ++k) {
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suppression_gain.GetGain(E2, R2, N2, analyzer, false, x, false,
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&high_bands_gain, &g);
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}
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std::for_each(g.begin(), g.end(),
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[](float a) { EXPECT_NEAR(0.f, a, 0.001); });
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// Verify the functionality for forcing a zero gain.
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suppression_gain.GetGain(E2, R2, N2, analyzer, false, x, true,
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&high_bands_gain, &g);
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std::for_each(g.begin(), g.end(), [](float a) { EXPECT_FLOAT_EQ(0.f, a); });
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EXPECT_FLOAT_EQ(0.f, high_bands_gain);
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}
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} // namespace aec3
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} // namespace webrtc
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