diff --git a/code/game/area/Space Station 13 areas.dm b/code/game/area/Space Station 13 areas.dm
index d9f0f9078d..7a8a669f4f 100755
--- a/code/game/area/Space Station 13 areas.dm	
+++ b/code/game/area/Space Station 13 areas.dm	
@@ -13,6 +13,24 @@ NOTE: there are two lists of areas in the end of this file: centcom and station
 
 */
 
+//Sound environment defines. Reverb preset for sounds played in this area, see sound datum reference for more.
+//Note that the environment of a sound is automatically set to 22 (underwater) for low-pressure in sound.dm
+#define STANDARD_STATION 5 //stoneroom
+#define LARGE_ENCLOSED 10 //hangar
+#define SMALL_ENCLOSED 3 //bathroom
+#define TUNNEL_ENCLOSED 8 //cave
+#define LARGE_SOFTFLOOR 11 //carpetted hallway
+#define MEDIUM_SOFTFLOOR 4 //livingroom
+#define SMALL_SOFTFLOOR 2 //room
+#define ASTEROID 8 //cave
+
+//for holodeck
+#define SPACE 22 //underwater
+#define ARENA 9 //arena
+#define PLAIN 19 //plain
+#define FOREST 15 //forest
+#define AUDITORIUM 6 //auditorium
+#define CONCERT_HALL 7 //concert hall
 
 
 /area
@@ -53,7 +71,7 @@ NOTE: there are two lists of areas in the end of this file: centcom and station
 	var/air_doors_activated = 0
 	var/list/ambience = list('sound/ambience/ambigen1.ogg','sound/ambience/ambigen3.ogg','sound/ambience/ambigen4.ogg','sound/ambience/ambigen5.ogg','sound/ambience/ambigen6.ogg','sound/ambience/ambigen7.ogg','sound/ambience/ambigen8.ogg','sound/ambience/ambigen9.ogg','sound/ambience/ambigen10.ogg','sound/ambience/ambigen11.ogg','sound/ambience/ambigen12.ogg','sound/ambience/ambigen14.ogg')
 	var/list/forced_ambience = null
-	var/sound_env = 2	//reverb preset for sounds played in this area, see sound datum reference for more
+	var/sound_env = STANDARD_STATION
 /*Adding a wizard area teleport list because motherfucking lag -- Urist*/
 /*I am far too lazy to make it a proper list of areas so I'll just make it run the usual telepot routine at the start of the game*/
 var/list/teleportlocs = list()
@@ -143,6 +161,7 @@ area/space/atmosalert()
 
 /area/shuttle
 	requires_power = 0
+	sound_env = SMALL_ENCLOSED
 
 /area/shuttle/arrival
 	name = "\improper Arrival Shuttle"
@@ -405,15 +424,18 @@ area/space/atmosalert()
 	name = "\improper Moon"
 	icon_state = "asteroid"
 	requires_power = 0
+	sound_env = ASTEROID
 
 /area/asteroid/cave				// -- TLE
 	name = "\improper Moon - Underground"
 	icon_state = "cave"
 	requires_power = 0
+	sound_env = ASTEROID
 
 /area/asteroid/artifactroom
 	name = "\improper Moon - Artifact"
 	icon_state = "cave"
+	sound_env = SMALL_ENCLOSED
 
 
 
@@ -438,6 +460,7 @@ area/space/atmosalert()
 	name = "\improper Thunderdome"
 	icon_state = "thunder"
 	requires_power = 0
+	sound_env = ARENA
 
 /area/tdome/tdome1
 	name = "\improper Thunderdome (Team 1)"
@@ -634,6 +657,7 @@ area/space/atmosalert()
 
 /area/maintenance
 	flags = RAD_SHIELDED
+	sound_env = TUNNEL_ENCLOSED
 
 /area/maintenance/aft
 	name = "Aft Maintenance"
@@ -768,6 +792,7 @@ area/space/atmosalert()
 /area/maintenance/substation
 	name = "Substation"
 	icon_state = "substation"
+	sound_env = SMALL_ENCLOSED
 
 /area/maintenance/substation/engineering // Probably will be connected to engineering SMES room, as wires cannot be crossed properly without them sharing powernets.
 	name = "Engineering Substation"
@@ -800,7 +825,7 @@ area/space/atmosalert()
 //Hallway
 
 /area/hallway/primary/
-	sound_env = 12 //hallway
+	sound_env = LARGE_ENCLOSED
 
 /area/hallway/primary/fore
 	name = "\improper Fore Primary Hallway"
@@ -865,10 +890,12 @@ area/space/atmosalert()
 	name = "\improper Heads of Staff Meeting Room"
 	icon_state = "bridge"
 	music = null
+	sound_env = MEDIUM_SOFTFLOOR
 
 /area/crew_quarters/captain
 	name = "\improper Command - Captain's Office"
 	icon_state = "captain"
+	sound_env = MEDIUM_SOFTFLOOR
 
 /area/crew_quarters/heads/hop
 	name = "\improper Command - HoP's Office"
@@ -916,6 +943,7 @@ area/space/atmosalert()
 /area/crew_quarters/toilet
 	name = "\improper Dormitory Toilets"
 	icon_state = "toilet"
+	sound_env = SMALL_ENCLOSED
 
 /area/crew_quarters/sleep
 	name = "\improper Dormitories"
@@ -924,10 +952,12 @@ area/space/atmosalert()
 /area/crew_quarters/sleep/engi_wash
 	name = "\improper Engineering Washroom"
 	icon_state = "toilet"
+	sound_env = SMALL_ENCLOSED
 
 /area/crew_quarters/sleep/bedrooms
 	name = "\improper Dormitory Bedroom One"
 	icon_state = "Sleep"
+	sound_env = SMALL_SOFTFLOOR
 
 /area/crew_quarters/sleep/cryo
 	name = "\improper Cryogenic Storage"
@@ -940,6 +970,7 @@ area/space/atmosalert()
 /area/crew_quarters/sleep_male/toilet_male
 	name = "\improper Male Toilets"
 	icon_state = "toilet"
+	sound_env = SMALL_ENCLOSED
 
 /area/crew_quarters/sleep_female
 	name = "\improper Female Dorm"
@@ -948,6 +979,7 @@ area/space/atmosalert()
 /area/crew_quarters/sleep_female/toilet_female
 	name = "\improper Female Toilets"
 	icon_state = "toilet"
+	sound_env = SMALL_ENCLOSED
 
 /area/crew_quarters/locker
 	name = "\improper Locker Room"
@@ -956,6 +988,7 @@ area/space/atmosalert()
 /area/crew_quarters/locker/locker_toilet
 	name = "\improper Locker Toilets"
 	icon_state = "toilet"
+	sound_env = SMALL_ENCLOSED
 
 /area/crew_quarters/fitness
 	name = "\improper Fitness Room"
@@ -972,10 +1005,12 @@ area/space/atmosalert()
 /area/crew_quarters/bar
 	name = "\improper Bar"
 	icon_state = "bar"
+	sound_env = LARGE_SOFTFLOOR
 
 /area/crew_quarters/theatre
 	name = "\improper Theatre"
 	icon_state = "Theatre"
+	sound_env = LARGE_SOFTFLOOR
 
 /area/library
  	name = "\improper Library"
@@ -985,6 +1020,7 @@ area/space/atmosalert()
 	name = "\improper Chapel"
 	icon_state = "chapel"
 	ambience = list('sound/ambience/ambicha1.ogg','sound/ambience/ambicha2.ogg','sound/ambience/ambicha3.ogg','sound/ambience/ambicha4.ogg','sound/music/traitor.ogg')
+	sound_env = LARGE_ENCLOSED
 
 /area/chapel/office
 	name = "\improper Chapel Office"
@@ -1001,6 +1037,7 @@ area/space/atmosalert()
 	name = "\improper Holodeck"
 	icon_state = "Holodeck"
 	lighting_use_dynamic = 0
+	sound_env = LARGE_ENCLOSED
 
 /area/holodeck/alphadeck
 	name = "\improper Holodeck Alpha"
@@ -1010,21 +1047,27 @@ area/space/atmosalert()
 
 /area/holodeck/source_emptycourt
 	name = "\improper Holodeck - Empty Court"
+	sound_env = ARENA
 
 /area/holodeck/source_boxingcourt
 	name = "\improper Holodeck - Boxing Court"
+	sound_env = ARENA
 
 /area/holodeck/source_basketball
 	name = "\improper Holodeck - Basketball Court"
+	sound_env = ARENA
 
 /area/holodeck/source_thunderdomecourt
 	name = "\improper Holodeck - Thunderdome Court"
+	sound_env = ARENA
 
 /area/holodeck/source_courtroom
 	name = "\improper Holodeck - Courtroom"
+	sound_env = AUDITORIUM
 
 /area/holodeck/source_beach
 	name = "\improper Holodeck - Beach"
+	sound_env = PLAIN
 
 /area/holodeck/source_burntest
 	name = "\improper Holodeck - Atmospheric Burn Test"
@@ -1034,22 +1077,28 @@ area/space/atmosalert()
 
 /area/holodeck/source_meetinghall
 	name = "\improper Holodeck - Meeting Hall"
+	sound_env = AUDITORIUM
 
 /area/holodeck/source_theatre
 	name = "\improper Holodeck - Theatre"
+	sound_env = CONCERT_HALL
 
 /area/holodeck/source_picnicarea
 	name = "\improper Holodeck - Picnic Area"
+	sound_env = PLAIN
 
 /area/holodeck/source_snowfield
 	name = "\improper Holodeck - Snow Field"
+	sound_env = FOREST
 
 /area/holodeck/source_desert
 	name = "\improper Holodeck - Desert"
+	sound_env = PLAIN
 
 /area/holodeck/source_space
 	name = "\improper Holodeck - Space"
 	has_gravity = 0
+	sound_env = SPACE
 
 //Engineering
 
@@ -1061,26 +1110,32 @@ area/space/atmosalert()
 /area/engineering/atmos
  	name = "\improper Atmospherics"
  	icon_state = "atmos"
+ 	sound_env = LARGE_ENCLOSED
 
 /area/engineering/atmos/monitoring
 	name = "\improper Atmospherics Monitoring Room"
 	icon_state = "atmos_monitoring"
+	sound_env = STANDARD_STATION
 
 /area/engineering/atmos/storage
 	name = "\improper Atmospherics Storage"
 	icon_state = "atmos_storage"
+	sound_env = SMALL_ENCLOSED
 
 /area/engineering/drone_fabrication
 	name = "\improper Engineering Drone Fabrication"
 	icon_state = "drone_fab"
+	sound_env = SMALL_ENCLOSED
 
 /area/engineering/engine_smes
 	name = "\improper Engineering SMES"
 	icon_state = "engine_smes"
+	sound_env = SMALL_ENCLOSED
 
 /area/engineering/engine_room
 	name = "\improper Engine Room"
 	icon_state = "engine"
+	sound_env = LARGE_ENCLOSED
 
 /area/engineering/engine_airlock
 	name = "\improper Engine Room Airlock"
@@ -1109,6 +1164,7 @@ area/space/atmosalert()
 /area/engineering/break_room
 	name = "\improper Engineering Break Room"
 	icon_state = "engineering_break"
+	sound_env = MEDIUM_SOFTFLOOR
 
 /area/engineering/engine_eva
 	name = "\improper Engine EVA"
@@ -1158,22 +1214,27 @@ area/space/atmosalert()
 /area/maintenance/auxsolarport
 	name = "Solar Maintenance - Fore Port"
 	icon_state = "SolarcontrolP"
+	sound_env = SMALL_ENCLOSED
 
 /area/maintenance/starboardsolar
 	name = "Solar Maintenance - Aft Starboard"
 	icon_state = "SolarcontrolS"
+	sound_env = SMALL_ENCLOSED
 
 /area/maintenance/portsolar
 	name = "Solar Maintenance - Aft Port"
 	icon_state = "SolarcontrolP"
+	sound_env = SMALL_ENCLOSED
 
 /area/maintenance/auxsolarstarboard
 	name = "Solar Maintenance - Fore Starboard"
 	icon_state = "SolarcontrolS"
+	sound_env = SMALL_ENCLOSED
 
 /area/maintenance/foresolar
 	name = "Solar Maintenance - Fore"
 	icon_state = "SolarcontrolA"
+	sound_env = SMALL_ENCLOSED
 
 /area/assembly/chargebay
 	name = "\improper Mech Bay"
@@ -1385,6 +1446,7 @@ area/space/atmosalert()
 /area/security/detectives_office
 	name = "\improper Security - Forensic Office"
 	icon_state = "detective"
+	sound_env = MEDIUM_SOFTFLOOR
 
 /area/security/range
 	name = "\improper Security - Firing Range"
@@ -1459,6 +1521,7 @@ area/space/atmosalert()
 /area/quartermaster/storage
 	name = "\improper Cargo Bay"
 	icon_state = "quartstorage"
+	sound_env = LARGE_ENCLOSED
 
 /area/quartermaster/qm
 	name = "\improper Cargo - Quartermaster's Office"
@@ -1809,10 +1872,12 @@ area/space/atmosalert()
 	name = "AI Upload Access"
 	icon_state = "ai_foyer"
 	ambience = list('sound/ambience/ambimalf.ogg')
+	sound_env = SMALL_ENCLOSED
 
 /area/turret_protected/ai_server_room
 	name = "AI Server Room"
 	icon_state = "ai_server"
+	sound_env = SMALL_ENCLOSED
 
 /area/turret_protected/ai
 	name = "\improper AI Chamber"
@@ -1822,6 +1887,7 @@ area/space/atmosalert()
 /area/turret_protected/ai_cyborg_station
 	name = "\improper Cyborg Station"
 	icon_state = "ai_cyborg"
+	sound_env = SMALL_ENCLOSED
 
 /area/turret_protected/aisat
 	name = "\improper AI Satellite"
diff --git a/code/game/area/asteroid_areas.dm b/code/game/area/asteroid_areas.dm
index 12ae5377ce..9783a2fe22 100644
--- a/code/game/area/asteroid_areas.dm
+++ b/code/game/area/asteroid_areas.dm
@@ -3,7 +3,7 @@
 /area/mine
 	icon_state = "mining"
 	music = 'sound/ambience/song_game.ogg'
-	sound_env = 5 //stoneroom
+	sound_env = 8 //cave
 
 /area/mine/explored
 	name = "Mine"
diff --git a/code/game/sound.dm b/code/game/sound.dm
index 1cc6f98807..76ae32b0e0 100644
--- a/code/game/sound.dm
+++ b/code/game/sound.dm
@@ -50,6 +50,9 @@ var/const/FALLOFF_SOUNDS = 0.5
 		else
 			S.frequency = get_rand_frequency()
 
+	//sound volume falloff with pressure
+	var/pressure_factor = 1.0
+
 	if(isturf(turf_source))
 		// 3D sounds, the technology is here!
 		var/turf/T = get_turf(src)
@@ -59,9 +62,6 @@ var/const/FALLOFF_SOUNDS = 0.5
 
 		S.volume -= max(distance - world.view, 0) * 2 //multiplicative falloff to add on top of natural audio falloff.
 
-		//sound volume falloff with pressure
-		var/pressure_factor = 1.0
-
 		var/datum/gas_mixture/hearer_env = T.return_air()
 		var/datum/gas_mixture/source_env = turf_source.return_air()
 
@@ -90,8 +90,11 @@ var/const/FALLOFF_SOUNDS = 0.5
 		S.falloff = (falloff ? falloff : FALLOFF_SOUNDS)
 
 	if(!is_global)
-		var/area/A = get_area(src)
-		S.environment = A.sound_env
+		if (pressure_factor < 0.5)
+			S.environment = 22 //underwater
+		else
+			var/area/A = get_area(src)
+			S.environment = A.sound_env
 
 	src << S
 
diff --git a/code/modules/holodeck/HolodeckControl.dm b/code/modules/holodeck/HolodeckControl.dm
index f14cdb8ebc..ffbbbe479e 100644
--- a/code/modules/holodeck/HolodeckControl.dm
+++ b/code/modules/holodeck/HolodeckControl.dm
@@ -287,6 +287,8 @@
 		if(M.mind)
 			linkedholodeck.play_ambience(M)
 
+	linkedholodeck.sound_env = A.sound_env
+
 	spawn(30)
 		for(var/obj/effect/landmark/L in linkedholodeck)
 			if(L.name=="Atmospheric Test Start")