From 58929e4c6c1c5db14509d24ef5088b604da895cd Mon Sep 17 00:00:00 2001
From: Max Maisel <max.maisel@posteo.de>
Date: Thu, 26 Jul 2018 17:00:16 +0200
Subject: [PATCH] Fixed stereo track LUFS calculation according to EBU R128.

---
 src/effects/Normalize.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/effects/Normalize.cpp b/src/effects/Normalize.cpp
index 49ede9cc7..cc05b5a10 100644
--- a/src/effects/Normalize.cpp
+++ b/src/effects/Normalize.cpp
@@ -260,8 +260,9 @@ bool EffectNormalize::Process()
                 break;
 
             if (mUseLoudness)
-               // Loudness: use mean of both tracks.
-               extent = (extent + extent2) / 2;
+               // Loudness: use sum of both tracks.
+               // As a result, stereo tracks appear about 3 LUFS louder, as specified.
+               extent = extent + extent2;
             else
                // Peak: use maximum of both tracks.
                extent = fmax(extent, extent2);