diff --git a/Tactical/Handle Doors.cpp b/Tactical/Handle Doors.cpp
index 978838256..5d0df347e 100644
--- a/Tactical/Handle Doors.cpp	
+++ b/Tactical/Handle Doors.cpp	
@@ -51,7 +51,7 @@
 #endif
 
 BOOLEAN gfSetPerceivedDoorState = FALSE;
-
+extern BOOLEAN gfPlayerMercHeardNoise;
 
 BOOLEAN HandleDoorsOpenClose( SOLDIERTYPE *pSoldier, INT32 sGridNo, STRUCTURE * pStructure, BOOLEAN fNoAnimations );
 
@@ -1161,6 +1161,9 @@ BOOLEAN HandleDoorsOpenClose( SOLDIERTYPE *pSoldier, INT32 sGridNo, STRUCTURE *
 		cnt++;
 	};
 
+	// sevenfm: reset code to detect heard noise
+	gfPlayerMercHeardNoise = FALSE;
+
 	if (pSoldier && pSoldier->ubDoorOpeningNoise > 0)
 	{		
 		//shadooow: noise handling moved here so we can work with modified value of pSoldier->ubDoorOpeningNoise
@@ -1281,8 +1284,11 @@ BOOLEAN HandleDoorsOpenClose( SOLDIERTYPE *pSoldier, INT32 sGridNo, STRUCTURE *
 				uiSoundID = METAL_DOOR_OPEN;
 			}
 
-			// OK, We must know what sound to play, for now use same sound for all doors...
-			PlayJA2Sample( uiSoundID, RATE_11025, SoundVolume( MIDVOLUME, sGridNo ), 1, SoundDir( sGridNo ) );
+			if (pSoldier && pSoldier->bVisible == TRUE || gfPlayerMercHeardNoise)
+			{
+				// OK, We must know what sound to play, for now use same sound for all doors...
+				PlayJA2Sample(uiSoundID, RATE_11025, SoundVolume(MIDVOLUME, sGridNo), 1, SoundDir(sGridNo));
+			}
 		}
 
 		if (((gWorldSectorX == gModSettings.ubInitialPOWSectorX && gWorldSectorY == gModSettings.ubInitialPOWSectorY) ||
@@ -1408,8 +1414,11 @@ BOOLEAN HandleDoorsOpenClose( SOLDIERTYPE *pSoldier, INT32 sGridNo, STRUCTURE *
 				uiSoundID = METAL_DOOR_CLOSE;
 			}
 
-			// OK, We must know what sound to play, for now use same sound for all doors...
-			PlayJA2Sample(uiSoundID, RATE_11025, SoundVolume(MIDVOLUME, sGridNo), 1, SoundDir(sGridNo));
+			if (pSoldier && pSoldier->bVisible == TRUE || gfPlayerMercHeardNoise)
+			{
+				// OK, We must know what sound to play, for now use same sound for all doors...
+				PlayJA2Sample(uiSoundID, RATE_11025, SoundVolume(MIDVOLUME, sGridNo), 1, SoundDir(sGridNo));
+			}
 		}
 	}
 
diff --git a/Tactical/opplist.cpp b/Tactical/opplist.cpp
index bc9c26a4f..2cd84d82f 100644
--- a/Tactical/opplist.cpp
+++ b/Tactical/opplist.cpp
@@ -5784,7 +5784,7 @@ void TheirNoise(UINT8 ubNoiseMaker, INT32 sGridNo, INT8 bLevel, UINT8 ubTerrType
 	// else if noiseMaker's NOBODY, no opplist changes or interrupts are possible
 }
 
-
+BOOLEAN gfPlayerMercHeardNoise = FALSE;
 
 void ProcessNoise(UINT8 ubNoiseMaker, INT32 sGridNo, INT8 bLevel, UINT8 ubTerrType, UINT8 ubBaseVolume, UINT8 ubNoiseType, STR16 zNoiseMessage )
 {
@@ -6019,6 +6019,15 @@ void ProcessNoise(UINT8 ubNoiseMaker, INT32 sGridNo, INT8 bLevel, UINT8 ubTerrTy
 				continue;
 			}
 
+			// Can the listener hear noise of that volume given his circumstances?
+			ubEffVolume = CalcEffVolume(pSoldier, sGridNo, bLevel, ubNoiseType, ubBaseVolume, bCheckTerrain, pSoldier->bOverTerrainType, ubSourceTerrType);
+
+			// sevenfm: indicate that player team heard noise
+			if (bTeam == gbPlayerNum && ubEffVolume > 0)
+			{
+				gfPlayerMercHeardNoise = TRUE;
+			}
+
 			// if a the noise maker is a person, not just NOBODY
 			if (ubNoiseMaker < TOTAL_SOLDIERS)
 			{
@@ -6147,15 +6156,11 @@ void ProcessNoise(UINT8 ubNoiseMaker, INT32 sGridNo, INT8 bLevel, UINT8 ubTerrTy
 				pSoldier->ubMiscSoldierFlags |= SOLDIER_MISC_HEARD_GUNSHOT;
 			}
 
-			// Can the listener hear noise of that volume given his circumstances?
-			ubEffVolume = CalcEffVolume(pSoldier,sGridNo,bLevel,ubNoiseType,ubBaseVolume,bCheckTerrain,pSoldier->bOverTerrainType,ubSourceTerrType);
-
 #ifdef RECORDOPPLIST
 			fprintf(OpplistFile,"PN: guy %d - effVol=%d,chkTer=%d,pSoldier->tType=%d,srcTType=%d\n",
 			bLoop,effVolume,bCheckTerrain,pSoldier->terrtype,ubSourceTerrType);
 #endif
 
-
 			if (ubEffVolume > 0)
 			{
 				// ALL RIGHT!	Passed all the tests, this listener hears this noise!!!