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Change aggregation window of aecDivergentFilterFraction to 1 second.

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BUG=

Review-Url: https://codereview.webrtc.org/1942183002
Cr-Commit-Position: refs/heads/master@{#12617}
This commit is contained in:
minyue 2016-05-03 14:42:41 -07:00 committed by Commit bot
parent 7dd7ab5c51
commit 3815655541
2 changed files with 3 additions and 3 deletions
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4
webrtc/modules/audio_processing/aec/aec_core.cc
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@ -47,8 +47,8 @@ static const int kDelayMetricsAggregationWindow = 1250; // 5 seconds at 16 kHz.
// Divergence metric is based on audio level, which gets updated every
// |kCountLen + 1| * 10 milliseconds. Divergence metric takes the statistics of
// |kDivergentFilterFractionAggregationWindowSize| samples. Current value
// corresponds to 0.5 seconds at 16 kHz.
static const int kDivergentFilterFractionAggregationWindowSize = 25;
// corresponds to 1 second at 16 kHz.
static const int kDivergentFilterFractionAggregationWindowSize = 50;
// Quantities to control H band scaling for SWB input
static const float cnScaleHband = 0.4f; // scale for comfort noise in H band.

2
webrtc/modules/audio_processing/include/audio_processing.h
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@ -685,7 +685,7 @@ class EchoCancellation {
// (Pre non-linear processing suppression) A_NLP = 10log_10(P_echo / P_a)
AudioProcessing::Statistic a_nlp;
// Fraction of time that the AEC linear filter is divergent, in a 0.5-second
// Fraction of time that the AEC linear filter is divergent, in a 1-second
// non-overlapped aggregation window.
float divergent_filter_fraction;
};