Use VAD to get a better speech power estimation in the IntelligibilityEnhancer

webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h

Index: webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h
diff --git a/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h b/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h
index 7d5de7d92a54b2fed4065ccee72a7990ce03d4a2..146899457e2141e272e0d046dcaa3dfe0e1af632 100644
--- a/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h
+++ b/webrtc/modules/audio_processing/intelligibility/intelligibility_utils.h
@@ -12,6 +12,7 @@
 #define WEBRTC_MODULES_AUDIO_PROCESSING_INTELLIGIBILITY_INTELLIGIBILITY_UTILS_H_
 
 #include <complex>
+#include <vector>
 
 #include "webrtc/base/scoped_ptr.h"
 
@@ -27,22 +28,16 @@ class PowerEstimator {
   PowerEstimator(size_t freqs, float decay);
 
   // Add a new data point to the series.
+  void Step(const float* data);
   void Step(const std::complex<float>* data);
 
   // The current power array.
-  const float* Power();
+  const float* power() { return &power_[0]; };

[hlundin-webrtc, 2016/02/15 13:05:12]

Why not return a const std::vector<float>&?

[aluebs-webrtc, 2016/02/19 03:56:31]

Done.

 
  private:
-  // TODO(ekmeyerson): Switch the following running means
-  // and histories from rtc::scoped_ptr to std::vector.
-  rtc::scoped_ptr<std::complex<float>[]> running_mean_sq_;
-
-  // The current magnitude array.
-  rtc::scoped_ptr<float[]> magnitude_;
   // The current power array.
-  rtc::scoped_ptr<float[]> power_;
+  std::vector<float> power_;
 
-  const size_t num_freqs_;
   const float decay_;
 };