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AgcManagerDirect: Modify clipping_predictor_evaluator_ configuration

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Increase the history size of clipping_predictor_evaluator_. Use one-sample
accuracy in clipping detection for the evaluator.

Bug: webrtc:12774
Change-Id: I8c1bbfe69fe55af73ce14992e49ef7295b3ce926
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/241602
Reviewed-by: Alessio Bazzica <alessiob@webrtc.org>
Commit-Queue: Hanna Silen <silen@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#36218}
This commit is contained in:
Hanna Silen
2022-03-16 12:51:57 +01:00
committed by WebRTC LUCI CQ
parent 4a08d5013b
commit 9524c0fa4f
1 changed files with 8 additions and 3 deletions
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11
modules/audio_processing/agc/agc_manager_direct.cc
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@ -52,7 +52,7 @@ constexpr int kSurplusCompressionGain = 6;
// History size for the clipping predictor evaluator (unit: number of 10 ms
// frames).
constexpr int kClippingPredictorEvaluatorHistorySize = 32;
constexpr int kClippingPredictorEvaluatorHistorySize = 500;
using ClippingPredictorConfig = AudioProcessing::Config::GainController1::
AnalogGainController::ClippingPredictor;
@ -609,9 +609,14 @@ void AgcManagerDirect::AnalyzePreProcess(const float* const* audio,
}
}
// Clipping prediction evaluation.
// `clipping_detected` is not used to evaluate the clipping predictor
// since for this purpose a single clipping sample counts as clipping.
const bool one_or_more_clipped_samples =
clipped_ratio >= (1.0f / samples_per_channel);
absl::optional<int> prediction_interval =
clipping_predictor_evaluator_.Observe(clipping_detected,
clipping_predicted);
clipping_predictor_evaluator_.Observe(
/*clipping_detected=*/one_or_more_clipped_samples,
clipping_predicted);
if (prediction_interval.has_value()) {
RTC_HISTOGRAM_COUNTS_LINEAR(
"WebRTC.Audio.Agc.ClippingPredictor.PredictionInterval",