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c9b89aaa16
Bug: webrtc:8533 Change-Id: I0a373f22ec377b226d3bc7d88d3245a99e18c7a0 Reviewed-on: https://webrtc-review.googlesource.com/23621 Reviewed-by: Per Åhgren <peah@webrtc.org> Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20709}
75 lines
2.4 KiB
C++
75 lines
2.4 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 "test/gtest.h"
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namespace webrtc {
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namespace {
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constexpr int kLowFrequencyLimit = kFftLengthBy2 / 2;
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void VerifyErle(const std::array<float, kFftLengthBy2Plus1>& erle,
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float erle_time_domain,
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float reference_lf,
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float reference_hf) {
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std::for_each(
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erle.begin(), erle.begin() + kLowFrequencyLimit,
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[reference_lf](float a) { EXPECT_NEAR(reference_lf, a, 0.001); });
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std::for_each(
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erle.begin() + kLowFrequencyLimit, erle.end(),
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[reference_hf](float a) { EXPECT_NEAR(reference_hf, a, 0.001); });
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EXPECT_NEAR(reference_lf, erle_time_domain, 0.001);
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}
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} // namespace
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// Verifies that the correct ERLE estimates are achieved.
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TEST(ErleEstimator, Estimates) {
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std::array<float, kFftLengthBy2Plus1> X2;
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std::array<float, kFftLengthBy2Plus1> E2;
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std::array<float, kFftLengthBy2Plus1> Y2;
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ErleEstimator estimator(1.f, 8.f, 1.5f);
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// Verifies that the ERLE estimate is properley increased to higher values.
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X2.fill(500 * 1000.f * 1000.f);
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E2.fill(1000.f * 1000.f);
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Y2.fill(10 * E2[0]);
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for (size_t k = 0; k < 200; ++k) {
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estimator.Update(X2, Y2, E2);
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}
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VerifyErle(estimator.Erle(), estimator.ErleTimeDomain(), 8.f, 1.5f);
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// Verifies that the ERLE is not immediately decreased when the ERLE in the
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// data decreases.
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Y2.fill(0.1f * E2[0]);
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for (size_t k = 0; k < 98; ++k) {
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estimator.Update(X2, Y2, E2);
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}
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VerifyErle(estimator.Erle(), estimator.ErleTimeDomain(), 8.f, 1.5f);
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// Verifies that the minimum ERLE is eventually achieved.
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for (size_t k = 0; k < 1000; ++k) {
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estimator.Update(X2, Y2, E2);
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}
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VerifyErle(estimator.Erle(), estimator.ErleTimeDomain(), 1.f, 1.f);
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// Verifies that the ERLE estimate is is not updated for low-level render
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// signals.
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X2.fill(1000.f * 1000.f);
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Y2.fill(10 * E2[0]);
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for (size_t k = 0; k < 200; ++k) {
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estimator.Update(X2, Y2, E2);
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}
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VerifyErle(estimator.Erle(), estimator.ErleTimeDomain(), 1.f, 1.f);
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}
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} // namespace webrtc
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