Compensate for the IntelligibilityEnhancer processing delay in high bands

webrtc/common_audio/lapped_transform.h

Index: webrtc/common_audio/lapped_transform.h
diff --git a/webrtc/common_audio/lapped_transform.h b/webrtc/common_audio/lapped_transform.h
index 0d668d0fed1567f1d088298baf6c92157b962e43..42a103a854b14441dac666468161ef399e262a2d 100644
--- a/webrtc/common_audio/lapped_transform.h
+++ b/webrtc/common_audio/lapped_transform.h
@@ -86,6 +86,12 @@ class LappedTransform {
   // constructor.
   size_t num_out_channels() const { return num_out_channels_; }
 
+  // Returns the initial delay.
+  //
+  // This is the delay introduced by the |blocker_| to be able to get and return
+  // chunks of |chunk_length|, but process blocks of |block_length|.
+  size_t initial_delay() const { return blocker_.initial_delay(); }
+
  private:
   // Internal middleware callback, given to the blocker. Transforms each block
   // and hands it over to the processing method given at construction time.