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Simplified the ERLE computation code in AEC3

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BUG=webrtc:7519

Review-Url: https://codereview.webrtc.org/2901253002
Cr-Commit-Position: refs/heads/master@{#18249}
This commit is contained in:
peah 2017-05-23 23:44:47 -07:00 committed by Commit bot
parent aea9293fd4
commit 1b92722ad5
1 changed files with 5 additions and 8 deletions
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13
webrtc/modules/audio_processing/aec3/erle_estimator.cc
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@ -41,11 +41,8 @@ void ErleEstimator::Update(
constexpr float kX2Min = 44015068.0f;
// Update the estimates in a clamped minimum statistics manner.
size_t k = 1;
size_t band_limit = kFftLengthBy2 / 2;
float max_erle = kMaxLfErle;
for (int j = 0; j < 2; ++j) {
for (; k < band_limit; ++k) {
auto erle_update = [&](size_t start, size_t stop, float max_erle) {
for (size_t k = start; k < stop; ++k) {
if (X2[k] > kX2Min && E2[k] > 0.f) {
const float new_erle = Y2[k] / E2[k];
if (new_erle > erle_[k]) {
@ -55,9 +52,9 @@ void ErleEstimator::Update(
}
}
}
band_limit = kFftLengthBy2;
max_erle = kMaxHfErle;
}
};
erle_update(1, kFftLengthBy2 / 2, kMaxLfErle);
erle_update(kFftLengthBy2 / 2, kFftLengthBy2, kMaxHfErle);
std::for_each(hold_counters_.begin(), hold_counters_.end(),
[](int& a) { --a; });