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AEC3 Tuning changes.

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This CL adds tuning to AEC3 for the purpose of reducing the impact of
gain changes in the analog microphone gain.

BUG=chromium:710818, webrtc:6018

Review-Url: https://codereview.webrtc.org/2811283003
Cr-Commit-Position: refs/heads/master@{#17673}
This commit is contained in:
peah 2017-04-12 05:40:55 -07:00 committed by Commit bot
parent e5fd38989d
commit 103ac7e7d9
2 changed files with 7 additions and 4 deletions
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8
webrtc/modules/audio_processing/aec3/aec_state.cc
View File

@ -72,7 +72,7 @@ rtc::Optional<size_t> EstimateFilterDelay(
}
constexpr int kEchoPathChangeCounterInitial = kNumBlocksPerSecond / 5;
constexpr int kEchoPathChangeCounterMax = 3 * kNumBlocksPerSecond;
constexpr int kEchoPathChangeCounterMax = 2 * kNumBlocksPerSecond;
} // namespace
@ -90,17 +90,19 @@ void AecState::HandleEchoPathChange(
if (echo_path_variability.AudioPathChanged()) {
blocks_since_last_saturation_ = 0;
active_render_blocks_ = 0;
echo_path_change_counter_ = kEchoPathChangeCounterMax;
usable_linear_estimate_ = false;
echo_leakage_detected_ = false;
capture_signal_saturation_ = false;
echo_saturation_ = false;
headset_detected_ = false;
previous_max_sample_ = 0.f;
if (echo_path_variability.delay_change) {
force_zero_gain_counter_ = 0;
force_zero_gain_ = true;
echo_path_change_counter_ = kEchoPathChangeCounterMax;
}
if (echo_path_variability.gain_change) {
echo_path_change_counter_ = kEchoPathChangeCounterInitial;
}
}
}

3
webrtc/modules/audio_processing/audio_processing_impl.cc
View File

@ -10,6 +10,7 @@
#include "webrtc/modules/audio_processing/audio_processing_impl.h"
#include <math.h>
#include <algorithm>
#include "webrtc/base/checks.h"
@ -1147,7 +1148,7 @@ int AudioProcessingImpl::ProcessCaptureStreamLocked() {
if (private_submodules_->echo_canceller3) {
const int new_agc_level = gain_control()->stream_analog_level();
capture_.echo_path_gain_change =
(capture_.previous_agc_level != new_agc_level);
abs(capture_.previous_agc_level - new_agc_level) > 5;
capture_.previous_agc_level = new_agc_level;
private_submodules_->echo_canceller3->AnalyzeCapture(capture_buffer);
}