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AEC3: Remove unused code from residual echo estimator

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Bug: webrtc:8671
Change-Id: Id2f711223826e71072dda343fc22ee996532a33a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132793
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#27611}
This commit is contained in:
Gustaf Ullberg
2019-04-15 10:21:56 +02:00
committed by Commit Bot
parent d3ba236686
commit 98da0bd54a
2 changed files with 5 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
modules/audio_processing/aec3/residual_echo_estimator.cc
View File

@ -28,7 +28,6 @@ void GetRenderIndexesToAnalyze(
const VectorBuffer& spectrum_buffer,
const EchoCanceller3Config::EchoModel& echo_model,
int filter_delay_blocks,
int headroom,
int* idx_start,
int* idx_stop) {
RTC_DCHECK(idx_start);
@ -76,7 +75,7 @@ void ResidualEchoEstimator::Estimate(
R2);
// When there is saturated echo, assume the same spectral content as is
// present in the micropone signal.
// present in the microphone signal.
if (aec_state.SaturatedEcho()) {
std::copy(Y2.begin(), Y2.end(), R2->begin());
}
@ -100,7 +99,7 @@ void ResidualEchoEstimator::Estimate(
std::array<float, kFftLengthBy2Plus1> X2;
EchoGeneratingPower(render_buffer.GetSpectrumBuffer(), config_.echo_model,
render_buffer.Headroom(), aec_state.FilterDelayBlocks(),
aec_state.FilterDelayBlocks(),
!aec_state.UseStationaryProperties(), &X2);
// Subtract the stationary noise power to avoid stationary noise causing
@ -114,10 +113,10 @@ void ResidualEchoEstimator::Estimate(
float echo_path_gain;
echo_path_gain =
aec_state.TransparentMode() ? 0.01f : config_.ep_strength.default_gain;
NonLinearEstimate(echo_path_gain, X2, Y2, R2);
NonLinearEstimate(echo_path_gain, X2, R2);
// When there is saturated echo, assume the same spectral content as is
// present in the micropone signal.
// present in the microphone signal.
if (aec_state.SaturatedEcho()) {
std::copy(Y2.begin(), Y2.end(), R2->begin());
}
@ -142,13 +141,8 @@ void ResidualEchoEstimator::Estimate(
aec_state.GetResidualEchoScaling(residual_scaling);
for (size_t k = 0; k < R2->size(); ++k) {
(*R2)[k] *= residual_scaling[k];
if (residual_scaling[k] == 0.f) {
R2_hold_counter_[k] = 0;
}
}
}
std::copy(R2->begin(), R2->end(), R2_old_.begin());
}
void ResidualEchoEstimator::Reset() {
@ -160,8 +154,6 @@ void ResidualEchoEstimator::Reset() {
}
X2_noise_floor_counter_.fill(config_.echo_model.noise_floor_hold);
X2_noise_floor_.fill(config_.echo_model.min_noise_floor_power);
R2_old_.fill(0.f);
R2_hold_counter_.fill(0.f);
}
void ResidualEchoEstimator::LinearEstimate(
@ -169,7 +161,6 @@ void ResidualEchoEstimator::LinearEstimate(
const std::array<float, kFftLengthBy2Plus1>& erle,
absl::optional<float> erle_uncertainty,
std::array<float, kFftLengthBy2Plus1>* R2) {
std::fill(R2_hold_counter_.begin(), R2_hold_counter_.end(), 10.f);
if (erle_uncertainty) {
for (size_t k = 0; k < R2->size(); ++k) {
(*R2)[k] = S2_linear[k] * *erle_uncertainty;
@ -186,7 +177,6 @@ void ResidualEchoEstimator::LinearEstimate(
void ResidualEchoEstimator::NonLinearEstimate(
float echo_path_gain,
const std::array<float, kFftLengthBy2Plus1>& X2,
const std::array<float, kFftLengthBy2Plus1>& Y2,
std::array<float, kFftLengthBy2Plus1>* R2) {
// Compute preliminary residual echo.
std::transform(X2.begin(), X2.end(), R2->begin(), [echo_path_gain](float a) {
@ -197,7 +187,6 @@ void ResidualEchoEstimator::NonLinearEstimate(
void ResidualEchoEstimator::EchoGeneratingPower(
const VectorBuffer& spectrum_buffer,
const EchoCanceller3Config::EchoModel& echo_model,
int headroom_spectrum_buffer,
int filter_delay_blocks,
bool apply_noise_gating,
std::array<float, kFftLengthBy2Plus1>* X2) const {
@ -205,8 +194,7 @@ void ResidualEchoEstimator::EchoGeneratingPower(
RTC_DCHECK(X2);
GetRenderIndexesToAnalyze(spectrum_buffer, config_.echo_model,
filter_delay_blocks, headroom_spectrum_buffer,
&idx_start, &idx_stop);
filter_delay_blocks, &idx_start, &idx_stop);
X2->fill(0.f);
for (int k = idx_start; k != idx_stop; k = spectrum_buffer.IncIndex(k)) {

4
modules/audio_processing/aec3/residual_echo_estimator.h
View File

@ -63,14 +63,12 @@ class ResidualEchoEstimator {
// gain.
void NonLinearEstimate(float echo_path_gain,
const std::array<float, kFftLengthBy2Plus1>& X2,
const std::array<float, kFftLengthBy2Plus1>& Y2,
std::array<float, kFftLengthBy2Plus1>* R2);
// Estimates the echo generating signal power as gated maximal power over a
// time window.
void EchoGeneratingPower(const VectorBuffer& spectrum_buffer,
const EchoCanceller3Config::EchoModel& echo_model,
int headroom_spectrum_buffer,
int filter_delay_blocks,
bool apply_noise_gating,
std::array<float, kFftLengthBy2Plus1>* X2) const;
@ -83,8 +81,6 @@ class ResidualEchoEstimator {
std::array<int, kFftLengthBy2Plus1>* X2_noise_floor_counter) const;
const EchoCanceller3Config config_;
std::array<float, kFftLengthBy2Plus1> R2_old_;
std::array<int, kFftLengthBy2Plus1> R2_hold_counter_;
std::array<float, kFftLengthBy2Plus1> X2_noise_floor_;
std::array<int, kFftLengthBy2Plus1> X2_noise_floor_counter_;
std::unique_ptr<ReverbModel> echo_reverb_;