List of HL2 Soundscapes

Here is a list of 245 soundscapes for use in Half-Life 2. An easy way of testing them is to use the playsoundscape console command, which includes limited searching for soundscape names so you shouldn't have to print out a copy of this list for reference.

Soundscapes with 'util' in the name are intended for inclusion in other, full soundscapes. While they should work without problems in-game, they generally aren't nearly as varied or deep as the resulting composites. Others have positional sounds which will be played at certain locations specified in the env_soundscape entity's properties. If these locations are not given, the sounds will not be heard.

Generic and Test

Name	Description	Position Number	Position Description
Nothing	No DSP, no ambients.
Automatic	DSP 1, dsp_volume 1.0.
automatic_dialog	Automatic DSP at 50% mix.
e3_techdemo_gmanspeaking	DSP 10.
e3_Techdemo_02	Physics room.
e3_Techdemo_03	DSP 1.
e3_Techdemo_05	Dripping cave ambient.
e3_Techdemo_06	Lake.
e3_end	Identical to Nothing.
GenericIndoor	Fluorescent lighting hum.
GenericOutdoor	Electric hum like above with a motor / gas / wind kind of sound in the background.	0	Quiet electric hum.
Cabin	Medium-low sound of fire burning or rumbling; soft clicking; a slightly louder four-tick rhythm followed by a release or exhaust sound (ahuugha).	0	Faint banjo-like TV music.
		1	Regular melodious whirring sound, like a small engine trying to start or a sump pump kicking in.
cabin_outdoor	Faint ambient white noise or rumble with occasional bird twittering. In the background, a faint but noticeable medium low sound that regularly builds up and then drops off before beginning again: wwwwwwwwwwwww - enuu.
test_tvset	Music coming from a TV set	0	Banjo-like TV music.

Train Station and City 17

Name	Description	Position Number	Position Description
d1_trainstation.util_city	Distant sounds of trains, cars, helicopters and other aircraft. APC and city alarm sounds.
d1_trainstation.city	All of the above plus a busy train station background ambience.
d1_trainstation.Platform	Loud and static hissing sound, city sounds barely audible in the background.
d1_trainstation.Turnstyle	Identical to d1_trainstation.city but city sounds less audible.
combine.computer	Loud, flat whine and an occasional blip.
d1_trainstation.Interrogation	Mixed uproar of the surrounding city and a combine terminal.	0	Combine computer terminal.
d1_trainstation.TerminalSquare	Similar to d1_trainstation.Turnstyle but with more city sounds like driving / beeping cars and background talking / train station messages.
d1_trainstation.QuietCourtyard	Quiet, windy courtyard with distant trains, cars, helicopters etc.
d1_trainstation.Occupants	Footsteps, clinging dishes, coughs, creaking floors and doors, distant rumbles, no background noise.
d1_trainstation.AppartmentCourtyard	Above mixed to city sounds.
d1_trainstation.Appartments	Similar to d1_trainstation.Occupants with background crowd noises.
d1_trainstation.RaidCityvoice	Cityvoice: (1) Citizen notice, priority identification check in progress. Please, assemble in your designated inspection position. (2) Attention please, all citizens in local residential block assume your inspection position. (3) Attention residents, this block contains potential civil infection. Inform, cooperate, assemble. (4) Citizen notice, failure to cooperate will result in permanent offworld relocation.
d1_trainstation.RaidOccupants	Breaking glass and boxes, footsteps on stairs and glass, breaking plates, woman screams and man grunts like being hit.
d1_trainstation.RaidAppartments	Knocks on doors, PA woman asking citizens to assume inspection positions, people chattering nervously, breaking glass, man shouting, PA stating city block suspected to contain infection.
general.concrete_quiet	Semi-loud hum of moving air.

PA announcements for City 17

Name	Description	Position Number	Position Description
cityvoice_level0	PA requests player id, city voice: (1) Attention please, unidentified person of interest, confirm your civil status with local protection team immediately, (2) Attention protection team, status ivation in progress in this community. Respond, isolate, inquire.
cityvoice_level1	PA invokes unrest procedures, requests player id, city voice: (1) Citizen reminder, inaction is conspiracy, report counter behavior to a civil protection team immediately, (2) Attention community, unrest procedure code is now in effect, inoculate, shield, pacify. Code: pressure, sword, sterilize, (3) Attention please, unidentified person of interest, confirm your civil status with local protection team immediately, (4) Attention protection team, status ivation in progress in this community. Respond, isolate, inquire.
cityvoice_level2	Player is evading, cops are summoned, city voice: (1) Attention please, evasion behavior consistent with now compliant defendant. Ground protection team, alert! Code: isolate, expose, administer, (2) Attention community, unrest procedure code is now in effect, inoculate, shield, pacify. Code: pressure, sword, sterilize, (3) Protection team alert! Evidence of anti-civil activity in this community. Code: assemble, clamp, contain, (4) Citizen reminder, inaction is conspiracy, report counter behavior to a civil protection team immediately.
cityvoice_level3	Player convicted of civil disruption, city block on alert, civil voice: (1) Individual, you are charged with socio endangerment level 1. Protection unit, prosecution code: beauty, sword, midnight, (2) Alert, community ground protection units, local unrest structure detected. Assemble, administer, pacify, (3) Attention community, unrest procedure code is now in effect, inoculate, shield, pacify. Code: pressure, sword, sterilize, (4) Protection team alert! Evidence of anti-civil activity in this community. Code: assemble, clamp, contain.
cityvoice_level4	Player convicted of anti-civil activity, city block punished, civil voice: (1)(2) Individual, you are now charged with socio endangerment level 5, cease evasion immediately. Receive your ???, (3) You are charged with anti-civil activity level 1. Protection unit, prosecution code: beauty, sword, operate, (4) Attention occupants, your block is now charged with permissive inactive coesion, 5 ration units deducted, (5) Attention community, unrest procedure code is now in effect, inoculate, shield, pacify. Code: pressure, sword, sterilize, (6) Attention all-ground protection teams, ??? judgement is now in effect, sentencing is now discretionary. Code: amputate, zero, confirm.
cityvoice_level5	Citizenship revoked, cops fire at will, city voice: (1)(2) Individual, you are convicted of mostly anti-civil violation. Implicit citizenship revoked. Status malignant. (3) Individual, you are charged with capital malcompliance, anti-citizen status approved, (4) Attention ground units, anti-citizen reported in this community, code: block, cauterize, stabilize, (5) Attention occupants, your block is now charged with permissive inactive coesion, 5 ration units deducted, (6) Attention all ground protection teams, judgement waiver now in effect, capital prosecution is discretionary.
city_searching_level1	City background noise with helicopters and alarm sounds.
city_searching_level2	Same as above.
city_searching_level3	Same as above.

Canals

Name	Description	Position Number	Position Description
d1_canals.util_windgusts	Wind gusts and snippets.
d1_canals.util_drips	Water dripping.
d1_canals.util_fardrips	Water dripping a bit further away, with interior echo.
d1_canals.util_headcrab_canister	Strong hissing noise.
d1_canals.util_shoreline	Sounds of small waves hitting shore.
d1_canals_tunnel01	Constant sound of a train in the distance, PA system announcing unidentified citizen and ordering CP to investigate, city alarm sounds.	0	Loop of a train driving by overhead.
d1_canals_citystart	City sounds, trains horning close by, PA system announcing unidentified citizen and ordering CP to investigate, city alarm sounds.
d1_canals_citadel	Same as above but with occasional low, massive metallic noises.
d1_canals_traincanal	City sounds, PA system announcing unidentified citizen and ordering CP to investigate, city alarm sounds.
d1_canals_traintunnel	Same as above and a strong, low tunnelish rumble in the background.
d1_canals_watercanal	Very faint city sounds, audible APC alarm, a helicopter, constant sounds of waving water and water hitting a boat.	1	Water hitting boat.
d1_canals_junkyard	Similar to d1_canals_traincanal. Distant helicopter also.
d1_canals_copcanals	Similar to d1_canals_traincanal plus water dripping and different PA announcement concerning evasion behaviour and alerts.	2	Dripping water.
		3	Wind blowing in a corridor, dripping water and other echoing sewer like effects.
d1_truck_pass	Quick, low noise of trucks and other vehicles passing by overhead. For use with other soundscapes.
d1_canals_barnacle_tunnel	Wind gusts in a tunnel. Distant city noises and sirens. PA announcement charging the player with "socioendangerment level 1" and instructing CPs.
d1_canals_pipe_chamber	Drips. Distant city noises and sirens. occasional helicopter fly-bys.
d1_canals_cop_alerted	Similar to d1_canals_pipe_chamber. PA announcement charging player with "socioendangerment level 5".	2	Dripping water.
d1_canals.heli_slide_tunnels	Interior. Loud running water and drips close by. Distant PA, trucks and sirens.
d1_canals.heli_attack	Exterior. Loud city noises. PA, helicopter, squeak of rapidly accelerating trucks.
d1_canals.drainroom	Loud running water and industrial hum. Distant PA.	0	Running river water loop.
		1	Running river water loop.
		2	Ambient corridor wind.
d1_canals.03copsattackthroughboards	Exterior. City ambience. PA ("Individual, you are charged with..."), constant close helicopters left and right, occasional train and other traffic sounds, distant sirens.	0	Quiet loop of a running diesel engine.
d1_canals.03entrytunnel	Interior, tunnel. Close frequent dripping sounds left, right and centre. PA ("Individual..."), distant helicopters left and right, occasional train horn, various distant sirens.	0	Ambient corridor wind.
		2	Constant flow water leaking.
d1_canals.steamtunnel	Interior. Continuous varying PA announcements ("Attention occupants..."), soft ambient industrial humming.
d1_canals.waterpuzzleroom	Loud industrial hum. Drips. No PA.
d1_canals.util_birds	Infrequent bird squawks.
d1_canals.util_critters	Infrequent croaking noises.
d1_canals.util_tunnel_windgusts	Occasional (infrequent) wind blowing through tunnel, varying pitches.
d1_canals.util_critters_under_docks	Constant chirping as of a cricket (centre) with additional occasional croaking and chirping sounds left and right. Occasional shoreline noises.
d1_canals.util_toxic_slime	Gurgling and hissing.
d1_canals.util_industrial	Brief industrial ambience, elevated pitch, as of air passing through a small enclosed space such as a vent.
d1_canals.general_dripping_tunnel	Numerous constant dripping sources, regular wind gusts of varying pitches, random panning of sounds.
d1_canals.general_windy_tunnel	Loud, centred, continuous wind gust (fairly low-pitch), with occasional trees/plants rustling, and occasional additional wind gusts at different pans.
d1_canals.general_watery_tunnel	Interior. Sound of continuously running rivulets of water in a cave/tunnel, occasional (frequent) additional drips, croaks and chirps at different pans.	0	Water dripping.
		1	Loop of different kind of critters.
d1_canals.general_watery_tunnel_shore	Similar to above but with the sound of waves regularly breaking in a small rocky lagoon.
d1_canals.redbarn_ambience	Hissing (of a headcrab canister?) Distant critters and creaks.	0	Headcrab canister.
d1_canals.floodgate_base_ambience	Interior. Loud continuous machine humming at centre, continuous beeping and buzzing to left, high-pitched drone to right, occasional mechanical sounds, plus beeping and electronic squeaks, to right.	0	Beeping of a Manhack charging station.
		1	Combine computer terminal.
d1_canals.floodgate_machineroom	Looped machines droning as of a pump or motor.
d1_canals.shore_and_reeds	Waves and occasional frog croaks/critter chirps and bird song. Occasional wind gusts. Notably quiet with no constant ambient wind noise.
d1_canals.spooky_infested_pipe	Dripping at center-right with occasional eerie, modulating wind noise with stereo movement effect. Very rare critter chirps.
d1_canals.water_tunnel_with_frogs	Constant sound of pipe draining into water, with waves breaking and constant, voluminous frog song.
d1_canals.windchimes_and_wind	Constant wind whistling mixed with intermittent wind chime song.	0	Windchimes.
canals_slime_outside	Constant slime gurgling with random slime sounds inside a corridor.	0	Burbling toxic slime.
canals_slime_tunnel	Same as above but with wind gusts.	0	Burbling toxic slime.
canals_tunnel_dry	Tunnel ambient with wind gusts and the sound of as if cars are driving by overhead.
canals_tunnel_wet	Dripping wet tunnel with wind snippets.
canals_canal_nowater	Birds and wind.
canals_canal_water	Same as above only with water waves.
canals_canal_water_industrial	Same as above only with machine rumbling.
canals_river	Wind and water waves.
canals_river_calm	Same as above but with crickets.
d1_canals_05_shanty_approach	Continuous glutinous gurgling/boiling/bubbling sound to centre, plus random glutinous burping sounds, occasional wind gusts, hissing and water noises.	0	Burbling toxic slime.
		1	Burbling toxic slime.
d1_canals_05_shanty	Wind, headcrab canister ambience and constant steam sound.	0	Burbling toxic slime.
		1	Burbling toxic slime.
		2	Headcrab canister.
		3	Headcrab canister.
		4	Headcrab canister.
		5	Headcrab canister.
		6	Headcrab canister.
d1_canals_07_entry_tunnel	Water drips in a tunnel.	0	Far water drips.
		1	Water drips.
d1_canals_07a_warehouse	Occasional creaking of wooden structures, repeated random high-pitched wind howling at varying pans, continuous sinister-sounding low-pitched modulated humming/droning sound.
d1_canals_08a_gun_tunnel_entrance	Continuous running water sound, centre, plus sound of waves breaking, centre.
d1_canals_08a_puzzle_arena	Waves breaking, infrequent chirping and wind noises.
d1_canals_08a_gun_scene	Very faint low rumble, faint but regular sound of pump or other reciprocating mechanism (ah hooo e-clik!), and louder sharp intermittent dripping sounds that echo as if in a closed chamber.	0	Far water drips.
		1	Water drips.
d1_canals_08a_tunnel_exit	A somewhat simpler version of "d1_canals_08a_gun_scene", with the echoing, hollow rumble and the sound of a pump or other reciprocating mechanism (ah hooo e-clik!), perhaps a bit louder than in "d1_canals_08a_gun_scene". No dripping or liquid sounds.
canals_canal_water_creaking_wood	Very regular medium-low volume slosh of water with intermittent medium or low-volume wood creaks, the thin whistling of gusts of wind, and twittering and other calls from birds and insects.	0	Wood creaking.
		1	Wood creaking.
canals_canal_water_creaking_metal	Very regular medium-low volume slosh of water with intermittent medium or low-volume metal creaks, the thin whistling of gusts of wind, and twittering and other calls from birds and insects. The metal creaking seems somewhat more frequent and a bit louder than the wood creaks in "canals_canal_water_creaking_wood".	0	Metal stress.
		1	Metal stress.
d1_canals_08_entry_tunnel	Loud water dripping inside a tunnel.	0	Far dripping water.
		2	Helicopter passing by every 15-25 seconds.
d1_canals_08_reservoir	Loud constant water waves.	1	Loud pouring dam water.
d1_canals_08_island	Running water, moderately loud, and rhythmic splashing, with very faint bird calls or other nature sounds.	0	Loud pouring dam water.
d1_canals_08_base_interior	The base sound is a constant high whirring and staticky crackle, with intermittent bursts of static, mechanical buzz-clicks, and low buzzes.	1	Combine computer terminal.

Kleiner's Lab and Black Mesa East

Name	Description	Position Number	Position Description
K_lab.LabSounds	Slime gurgling in a room with machines.	0	Slime gurgling loop.
		1	Computer beeping and other machine noises.
E3_lab.LabSounds	Fluorescent lights in a laboratory with machines and music playing.	0	Various strange machine noises (goo tubes).
		1	Running lab machines.
eli_01_lab_main_1	Machine hum with glutinous dripping in an irregular pattern; regular low and rather indistinct sound of pressure escape.	0	Quiet water sounds and slime gurgling noises.
		1	Beeping lab equipment.
		2	The sound of moving elevators from an elevator shaft.
		3	Vort lab machine hum.
eli_01_elevator_1	Low volume medium pitch machinery sound accompanied by a regularly recurring, almost bell-like hum: hwuuung - hwuuung - hwunng.
eli_01_upperhall_2	Musical throbbing note, medium low, that reverberates three times (bwuung-weh-weh-weh), mixed with clinking noises that resemble kitchen sounds, occasional dripping, and a man coughing.	0	Randomly metal rattling, rain dripping and people coughing.
eli_01_upperhall_1	Low atmospheric rumble/wavering sound with the ahhhh-ho clik! of some slow pump or piston device in the background.
eli_01_lowerlab_hall_1	Slightly louder and more resonant version of "eli_01_upperhall_2", with the sounds becoming a bit stronger and more "present".	0	Quiet engine sounds and random metal rattling, rain dripping and people coughing.
eli_01_lower_corridor_1	Corridor ambience.
eli_01_lower_ravenhall_1	Silent rumbling in a tunnel.
eli_01_lower_ravenhall_2	Many far away explosions.
eli_02_lowerlab_hall_1	Fluorescent light in a room with metal rumbling and shuffling.	0	Quiet running engine.
eli_02_lower_corridor_1	Metal rumbling and shuffling in a corridor.
eli_02_ravenshaft_1	Windy, hollow low rumble with frequent background sounds half-way between the creak of metal and a zombie's scream.
eli_02_ravenshaft_2	Wood creaking, wind blowing and frequent drips of water in the outside.	0	Quiet wood creaking, strange cave noises and rock rumbles.
eli_02_scrapyard_1	Outside ambience with no life.
eli_02_scrapyard_2	Same as above but with dull metal sounds.

Ravenholm

Name	Description	Position Number	Position Description
d1_town.Start	Wind gusts, distant zombie howls and screams, 'drum beats'.
d1_town.Street	Wind, metallic scrapes and bangs, distant and close-range zombie sounds. Feels much 'closer' than the previous.
d1_town.CorpseRoom	Irregular buzz-throughs by an aggressive fly that makes an unusually sharp sound, as well as occasional softer bursts of squeaking from mice or rats. Pronounced echo.
d1_town.WoodBuilding	Wooden creaks, rodent sounds.
d1_town.ConcreteBuilding	Identical to Automatic.
d1_town.Rooftop	Constant low rumble; gusts and whistles of wind. Irregular mixture of medium to low volume metallic creaks and groans, high and low scraping sounds, and chain link fence scraping and impacts.
d1_town.MineshaftDown	Wind blowing, wood creaking, rumbling sounds and cave ambience.
d1_town.WaterCave	Same as above, but with frequent water drops.
d1_town.HeadcrabCave	Same as above but with metal creaks and the drops being distant.
d1_town.CaveTunnel	Corridor ambience with rumbling sounds.

Coastline and Highway 17

Name	Description	Position Number	Position Description
coast.util_headcrab_canister	Silence with occasional bizarre Combine tech noise.
coast.util_metalstress	Silence with occasional sounds of metal stress.
coast.util_shackmetal	Silence with occasional quick squeeks from moving metal.
coast.util_crumblycliff	Silence with sounds of crumbling landmasses.
coast.util_windgusts	Silence with wind gusts.
coast.util_fardrips	Silence with water dripping.
coast.util_birds	Silence with occasional sounds of seagulls calling.
coast.util_lakeshoreline	Waves breaking gently.
coast.util_shoreline	Similar to above, but with what feels like much more massive waves.
coast.util_distant_shoreline	Similar to above, but from a greater distace.
coast.util_antlion_den	Antlions hissing.
coast.general_windy_tunnel	Steady whine of wind in a tunnel and muffled sounds of waves crashing.
coast.general_tunnel	Similar to above but quieter and with waterdrips mixed in.
coast.zombie_tunnel	Steady, tunnelish sound and some occasional train sounds.
coast.general_oldwoodbuilding	Wood stress, wind gusting, seagulls calling.
coast.general_oldwoodbuilding_with_windchimes	Same as above but with chimes.	0	Windchimes.
coast.combine_controlroom_ambience	Steady whine of Combine tech.
coast.general_shoreline	Waves crashing, wind gusting, seagulls calling.
coast.positional_shoreline	Similar to above, but closer by.	0	Water waves crashing.
		1	Water waves crashing.
		2	Water waves crashing.
		3	Water waves crashing.
		4	Water waves crashing.
coast.shoreline_with_antlion_dens	Similar to "coast.general_shoreline", but with antlion sounds.	0	Antlion den sounds.
		1	Antlion den sounds.
		2	Antlion den sounds.
		3	Antlion den sounds.
coast.bridge_ambient	Wind blowing, seagulls calling.
coast.bridge_shack	Same as above but quieter.
coast.cliffside	A mix of "coast.general_shoreline" and "coast.util_crumblycliff".
coast.bridge_concrete_room	Muffled, distant wave sounds. Ideal for coastal buildings which aren't completely open to the elements.
coast.generic_ambient_01	Similar to above, but without the antlions.
coast.distant_shoreline	Distant waves breaking, wind gusting and close-range antlion sounds.	0	Antlion den sounds.
		1	Antlion den sounds.
		2	Antlion den sounds.

Nova Prospekt

Name	Description	Position Number	Position Description
prison.util_distantcombat_verylight	Quiet ambience,occasionally the sound of a soldier dying, or gunfire.
prison.util_distantcombat_light	Identical to the soundscape above, just with more gunfire, and antlion hiss'.
prison.util_distantcombat_heavy	Clear sound of Combine Soldiers fighting Antlions - lots of gunfire and explosions.
prison.util_antlion_burrows	Sound of Antlions hissing and growling, waiting to ambush the enemy.
prison.util_fardrips	Far away drips.
prison.util_drips	Same drips but closer.
prison.util_distant_trains	Far away train horns.
prison.util_radio	Random radio sounds.
prison.util_control_room	Rubbles and machine sounds from a combine monitor.	0	Combine computer terminal.
prison.citizen_camp	Outdoor gusts, low booming, and whistling of wind, dying away to silence before repeating after a few seconds.
prison.redlight_bunker	Constant wind.
prison.outdoor_courtyard	Wind with far away thumper sounds.
prison.outdoor_courtyard_hvycombat	Same as above but with gun fire, soliders and antlions dying/attacking.
prison.trainstation	Room ambience with occasional train horns.
prison.teleport_area	Combine machine sounds in a big open room.	0	Combine computer terminal.
		1	Combine computer terminal.
prison.control_room	Combine beeping sounds with a fan in the background.	0	Various radio noises.
		1	Combine computer terminal.
prison.control_room_simple	Computer/combine console hum with centered combine soldier vocoder noise (as heard in nova propekt scripted radio transmissions), but no speech.	0	Various radio noises.
prison.combine_wall	Loud ambience of the outside with explosion-like sounds.
prison.util_quiet_cellblock	Relatively loud ambience, with fluorescent lighting hum, metal flutterings and scrapings. Utility, but works quite well on its own.
prison.util_louder_cellblock	Slightly quieter ambience.
prison.larger_cellblock_vlightcombat	Machine sounds and metal rumbling in a corridor.
prison.larger_cellblock_hvycombat	Same as above but with soliders, gunfire and antlions.
prison.larger_cellblock_lightcombat	Same as above but only with gunfire.
prison.general_hallway_lightcombat	Hallway with antlions, grenades and soliders.
prison.general_hallway_vlightcombat	Same as above but with no fights.
prison.general_dripping_tunnel	A tunnel with water drips.
prison.hall_with_burrows	Hallway with crickets and antlion burrowing sounds.	0	Various antlion sounds.
		1	Various antlion sounds.
prison.electric_water_room	Water flowing in a room with machines in it.
prison.laundry	Loud, whooshing metallic machinery sounds.	0	Ambient laundry machines hum.
prison.watery_hallway	A lot of drips.
prison.showers	Loud, fairly high-pitched water pipes and water dripping.	0	Running water.
		1	Water dripping.
		2	Steam loop.
prison.zombie_infested	Flies, distant drips, rats and deep, wind-like sounds.

War-torn City 17

Name	Description	Position Number	Position Description
streetwar.util_combine_atmosphere	Constant random wind gusts and machine-like sounds.
streetwar.util_rubble	Random rubble falling off of somewhere.
streetwar.util_sirens	Manhacks, cityscanners and APCs passing by.
streetwar.util_light_sirens	Same as above but less frequent.
streetwar.util_zombie_infested	Occasional buzzing flies and faint chirping birds.
streetwar.util_light_combat_atmosphere	Random wind blows and metal ambiences, helicopters passing by.
streetwar.util_heavy_combat_atmosphere	Same as above but more frequent.
streetwar.util_muffled_light_combat	Thunder sounds and distant explosions.
streetwar.util_light_combat	Rare gun fire, zombies, antlions and soliders.
streetwar.util_medium_combat	Same as above but slightly more frequent.
streetwar.util_heavy_combat	Same as above but more frequent.
streetwar.util_drips	Water drips close up.
streetwar.util_fardrips	Same as above but farther away.
streetwar.zombie_water_room	Occasional buzzing flies and fairly loud dripping water.
streetwar.car_tunnel	Tunnel with cars passing by and silent explosions happening rarely.
streetwar.general_small_tunnel	Ambience of a small tunnel.
streetwar.car_tunnel_opensky	Same as "streetwar.car_tunnel" but with outdoor sounds and fighting sounds.
streetwar.toxic_car_tunnel	Same as "streetwar.car_tunnel" but with toxic slime gurgling.
streetwar.infested_appartments	Flies, fighting sounds, metal creaking and rats in a house.
streetwar.general_indoor_light_combat	Rare fighting from indoors.
streetwar.general_indoor_medium_combat	Same as above, but slightly more frequent.
streetwar.general_indoor_heavy_combat	Same as above, but more frequent.
streetwar.general_outdoor_light_combat	Fighting sounds from outdoors with alarms.
streetwar.general_outdoor_medium_combat	Same as above, but slightly more frequent.
streetwar.general_outdoor_heavy_combat	Same as above, but more frequent.
streetwar.destroyed_concrete_building	Fighting sounds, explosions, wind in a building with outdoor sounds in the background.
streetwar.rooftop_heavy_combat	Many fighting sounds with an alarm in the background and wind on top of a roof.
streetwar.control_room	Combine machines beeping.	0	Combine computer terminal.
		1	Combine computer terminal.
streetwar.bank_control_room	Same as above but with no beeping but instead just random machine sounds.	0	Combine computer terminal.
streetwar.bank_machine_room	Steam, machine sounds, silent wind in a room full of pipes.
streetwar.bank_general	A big room with silent wind and with silent fighting in the background.
e3_c17_01_battle	Fire, silent alarm in the background, fighting sounds.	0	Medium sized fire loop.
		1	Combine barricade gate noises.
		2	Ambient city siren loop.
c17_02_street_lower_1	Wind, very silent alarm, fighting sounds.	0	Combine wall thundering.
c17_02_street_upper_1	Same as above but with explosions and louder fighting.
c17_02_street_upper_2	Same as above but with a louder alarm.	0	Combine wall thundering.
c17_02_inside_apartments_1	Random loud metal creaking in a room with fluorescent light.	0	Combine wall thundering and machine noises.
streetwar.underground_manhack_tunnel	Loud steam, water dripping, silent machines and high pitched 'stingers'.
streetwar.vertical_warehouse_arena	Wind passing by.

Combine Citadel

Name	Description	Position Number	Position Description
d3_citadel.silence_and_dialog	Seems to mute all sounds (except dialogue, presumably). Could be useful for cutscenes when music is playing?
d3_citadel.util_hits	Strange, machine-like sounds.
d3_citadel.util_activity	Strider or gunship sounds.
d3_citadel.util_pods	Strange machine passing by.
d3_citadel.deep_dropoff_inside	Loud ambience with strange machine sounds and enemy sounds.
d3_citadel.pod_vista	Very loud pods moving.
d3_citadel.generic	Kind of silent Citadel ambience with no combat.
d3_citadel.generic_moody	Fairly loud, near-musical Citadel ambience; no combat sounds.
d3_citadel.generic_moody2	Quieter Citadel ambience; no combat sounds.
d3_citadel.stasis_room	Loud ambience with a stasis field with another machine in the background.	0	Stasis field.
d3_citadel.combine_ball_room	Harmonical combine balls passing by with more Citadel ambience.	0	Ball field.
d3_citadel.general_control_room	A combine console with Citadel ambience in the background.	0	Combine computer terminal.
d3_citadel.alyx_teleport_control_room	Various teleport-discharge sounds; machinery audible.	0	Combine computer terminal.
d3_citadel.final_portal_chamber	Loud, somewhat windy machinery sounds; occasional teleporter discharge sounds.	0	Combine computer terminal.
		1	Combine computer terminal.
		2	Loud noisy central portal beam.
d3_citadel.top_of_teleport_chamber	High-pitched buzzing; city combat sounds audible.
d3_citadel_01.pipe_entrance	Alarm sound with combat sounds and wind gusts.
d3_citadel_01.cliffside1	Metal creaking and loud wind with the city alarm in the background.
d3_citadel_01.citadel_entrance	Same as above only silenter and with the citadel ambience slightly audible.
d3_citadel.breen_field	Nearly the same as breen.office but with deep metal scraping sounds.
d3_citadel.breen_hall	Deep vent sounds and occasional jet-like sounds and very very light combine marching sounds.
d3_citadel.breen_office	Almost identical to above, some sounds are just a little bit quieter and it uses another DSP type.