commit 11d4a42ce5aecae3885498a22254b709687c07e8
author aluebs <aluebs@webrtc.org> Thu Apr 28 21:58:32 2016
committer Commit bot <commit-bot@chromium.org> Thu Apr 28 21:58:38 2016
tree 8db27f52b70cbde6140aa2aa53a623b8e114444d
parent c01c6a423cfe60e2d0bf1f700bdc331ba1d29572

Compensate for the compression gain in the IntelligibilityEnhancer

The render signal that reaches the IE is already normalized and compressed by an AGC on the far-end capture processing. Because the noise estimation is done before the AGC compression, we need to compensate for this gain in the IE to be able to compare these 2 powers.

Review-Url: https://codereview.webrtc.org/1913603002
Cr-Commit-Position: refs/heads/master@{#12549}

webrtc/modules/audio_processing/gain_control_impl.h

diff --git a/webrtc/modules/audio_processing/gain_control_impl.h b/webrtc/modules/audio_processing/gain_control_impl.h
index 9498ac6..2459ce3 100644
--- a/webrtc/modules/audio_processing/gain_control_impl.h
+++ b/webrtc/modules/audio_processing/gain_control_impl.h
@@ -51,6 +51,8 @@
   // Reads render side data that has been queued on the render call.
   void ReadQueuedRenderData();
 
+  int compression_gain_db() const override;
+
  private:
   class GainController;
 
@@ -61,7 +63,6 @@
   int set_target_level_dbfs(int level) override;
   int target_level_dbfs() const override;
   int set_compression_gain_db(int gain) override;
-  int compression_gain_db() const override;
   int enable_limiter(bool enable) override;
   int set_analog_level_limits(int minimum, int maximum) override;
   int analog_level_minimum() const override;