From cf8f2d689abe3555a3ed6a148808c9f67fe33c54 Mon Sep 17 00:00:00 2001
From: Rupert Carmichael <5050061-carmiker@users.noreply.gitlab.com>
Date: Sun, 10 May 2020 15:14:34 +0000
Subject: [PATCH] Fix scratchy audio in SMB3 and others

---
 source/core/NstApu.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/source/core/NstApu.cpp b/source/core/NstApu.cpp
index a5e1876..19e4388 100644
--- a/source/core/NstApu.cpp
+++ b/source/core/NstApu.cpp
@@ -1870,7 +1870,8 @@ namespace Nes
 					amp = (sum * outputVolume + rate/2) / rate * 3;
 				}
 			}
-			else if (amp < Channel::OUTPUT_DECAY)
+			// Disabling these blocks fixes scratchy audio in many games
+			/*else if (amp < Channel::OUTPUT_DECAY)
 			{
 				return 0;
 			}
@@ -1878,7 +1879,7 @@ namespace Nes
 			{
 				amp -= Channel::OUTPUT_DECAY;
 				step &= STEP_CHECK;
-			}
+			}*/
 
 			return amp;
 		}