This subject is related to the Black Mesa Incident era.

Black Mesa Announcement System/Quotes

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The following is a list of quotes from the Black Mesa Announcement System. Included are also the many cut Half-Life announcements only found in the file "sentences.txt".

The announcements are generated in real-time from a total of 608 separate words, with occasionally blank sound files for pauses between words and notification sounds when needed. The sentences have been reassembled from scratch for the wiki following the lists found in "sentences.txt", along with some announcements not listed in the file. Also included are the notification sounds; in some instances they have a different pitch, which is not reproduced here.

Half-Life[edit]

Location: sound/vox/

Training Facility (Unused)[edit]

Sentence name Filename(s) Quote
TR_A three, two, one, deeoo Three, two, one.
TR_B deeoo, target, system, deactivated Target system deactivated.

Anomalous Materials Lab, before the incident[edit]

Heard before the Resonance Cascade in the Research area of Sector C's Anomalous Materials Test Labs and Control Facilities, before and after boarding the elevator leading to the lower level where the Anti-Mass Spectrometer is located.

Sentence name Filename(s) Quote
C1A0_0 dadeda, agent, coomer, report, to, topside, tactical, operations, center Agent Coomer, report to Topside Tactical Operations Center.
C1A0_1 dadeda, inspection, team, to, radioactive, materials, handling, bay Inspection team to Radioactive Materials Handling Bay.
C1A0_2 dadeda, agent, sixteen, report, to, administration, sub, level, two Agent 16, report to Administration Sub-Level 2.
C1A0_3 doop, doctor, johnson, please, call, observation, tank, one Dr. Johnson, please call Observation Tank 1.
C1A0_4 doop, doctor, west, please, report, to, lambda, reactor, complex Dr. West, please report to Lambda Reactor Complex.
C1A0_5 doop, doctor, cross, call, seven, two, nine, please Dr. Cross, call 729 please.
C1A0_6 doop, sargeant (sic), bailey, to, topside, checkpoint, bravo Sergeant Bailey to Topside Checkpoint Bravo.
C1A0_7 dadeda, cryogenic, safety, crew, report, status, at, eleven, hundred, please Cryogenic Safety Crew, report status at 11:00 please.
C1A0_8 dadeda, coded, message, for, captain, black, command, and, communication, center Coded message for Captain Black, Command and Communication Center.
C1A0_9 dadeda, sector, c, science, personnel, report, to, anomalous, materials, test, lab Sector C science personnel, report to Anomalous Materials test laboratory.
C1A0_10 doop, doctor, freeman, to, anomalous, materials, test, lab, immediately Dr. Freeman to Anomalous Materials test laboratory immediately.
C1A0_11 bloop, attention, experimental, propulsion, lab, test, fire, in, ninety, minutes Attention. Experimental Propulsion Laboratory test fire in 90 minutes.
C1A0_12 bloop, hydro, plant, now, operating, at, sixty, percent Hydro Plant now operating at 60%.
C1A0_13 bloop, black, mesa, topside, temperature, is, ninety, three, degrees Black Mesa topside temperature is 93 degrees.
C1A0_14 bloop, launch, officer, reports, alpha, satellite, deploy, is, nominal Launch officer reports Alpha Satellite deploy is nominal.
C1A0_15 bloop, doctor, birdwell, reports, superconducting, interchange, is, activated Dr. Birdwell reports superconducting interchange is activated.
C1A0_16 bloop, attention, report, any, security, violation, to, administration, sub, level, one Attention. Report any security violation to Administration Sub-Level 1.
C1A0_17 bloop, attention, service, personnel, please, clear, helicopter, hangar, one Attention. Service personnel, please clear Helicopter Hangar 1.
C1A0_18 bloop, shield, inspection, crew, reports, primary, reactor, nominal Shield Inspection Crew reports primary reactor nominal.
C1A0_19 bloop, transportation, control, reports, all, systems, on, time Transportation Control reports all systems on time.
C1A0_20 dadeda, doctor, victor, report, to, supercooled, laser, lab, please Dr. Victor, report to Supercooled Laser Laboratory please.
C1A0_21 dadeda, sargeant (sic), guthrie, report, to, topside, motorpool, immediately Sergeant Guthrie, report to Topside Motorpool immediately.
C1A0_22 deeoo, uranium, shipment, inspection, team, to, sector, d Uranium Shipment Inspection Team to Sector D.
C1A0_START dadeda, vox_login Hello. The Automatic Diagnostic and Announcement System welcomes you to the Black Mesa Research Facility. Remember: Have a secure day. (Unused; features an early name for the Black Mesa Announcement System.)

Anomalous Materials Lab, after the incident[edit]

Heard after the Resonance Cascade in the Research area of Sector C's Anomalous Materials Test Labs and Control Facilities, in the corridor leading to the lobby, and when being in the office before entering Sector B, where a Zombie is sitting on a chair.

"sentences.txt" also mentions Sector B's Coolant Reservoir Facility as a location, but it is never visited.

Sentence name Filename(s) Quote
C1A1_0 bizwarn (3x), warning, high, energy, detonation, detected, in, materials, lab Warning. High energy detonation detected in Materials Laboratory.
C1A1_1 buzwarn, attention, security, personnel, to, sector, c, immediately Attention. Security personnel to Sector C immediately.
C1A1_2 buzwarn, warning, unauthorized, biological, forms, detected, in, sector, c Warning. Unauthorized biological forms detected in Sector C.
C1A1_3 buzwarn, warning, unauthorized, biological, forms, detected, in, coolant, maintenance, area Warning. Unauthorized biological forms detected in Coolant Maintenance Area.
C1A1_4 bizwarn (3x), any, damage, control, team, to, sector, c, immediately Any Damage Control Team to Sector C immediately.
C1A1_5 buzwarn, warning, sector, c, elevator, failure, do, not, use Warning. Sector C elevator failure. Do not use.
C1A1_6 bizwarn (3x), biohazard, warning, in, sector, b, and, c Biohazard warning in Sector B and C.
C1A1_7 buzwarn, attention, sector, c, science, personnel, evacuate, area, immediately Attention. Sector C science personnel, evacuate area immediately.
C1A1_8 buzwarn, warning, flooding, detected, on, sub, level, 3, sector, b Warning. Flooding detected on Sub-Level 3, Sector B.
C1A1_9 bizwarn (3x), warning, anomalous, energy, field, detected, in, administration, center Warning. Anomalous energy field detected in Administration Center.
C1A1_10 deeoo (2x), attention, any, sector, c, science, personnel, please, report, status Attention. Any Sector C science personnel, please report status.
C1A1_11 deeoo (2x), attention, sector, c, science, personnel, please, report, status, immediately Attention. Sector C science personnel, please report status immediately.

Administration Center (Unused)[edit]

Sentence name Filename(s) Quote
C1A2_0 deeoo, emergency, cleanup, team, to, biological, waste, processing, plant Emergency clean-up team to Biological Waste Processing Plant.
C1A2_1 buzwarn (2x), attention, administration, personnel, evacuate, sector, d, immediately Attention. Administration personnel, evacuate Sector D immediately.
C1A2_2 deeoo (2x), attention, security, personnel, to, sector, d Attention. Security personnel to Sector D.
C1A2_3 deeoo, service, team, check, elevator, one, sector, c Service team, check Elevator 1, Sector C.
C1A2_4 buzwarn (2x), warning, unauthorized, biological, forms, detected, in, ventillation (sic), system Warning. Unauthorized biological forms detected in ventilation system.
C1A2_5 deeoo, lieutenant, backman, and, cleanup, team, to, sub, level, 3 Lieutenant Backman and clean-up team to Sub-Level 3.
C1A2_6 bizwarn (3x), danger, turret, defense, systems, activated, sector, d Danger. Turret defense systems activated, Sector D.
C1A2_7 deeoo (2x), security, officer, reports, men, down, in, sector, d, medical, help, required Security officer reports men down in Sector D, medical help required.
C1A2_8 bizwarn (3x), extreme, danger, all, turret, defense, systems, activated, sector, d Extreme danger, all turret defense systems activated, Sector D.
C1A2_9 deeoo, turret, repair, personnel, to, high, security, materials, storage, area Turret repair personnel to High Security Materials Storage Area.
C1A2_10 deeoo (2x), attention, electric, shock, hazard, detected, in, administration, center Attention. Electric shock hazard detected in Administration Center.
C1A2_11 buzwarn (2x), security, officer, reports, medical, emergency, administration, center Security officer reports medical emergency, Administration Center.

High Security Materials Storage Area[edit]

Sentence name Filename(s) Quote
C1A3_0 buzwarn (2x), attention, all, science, personnel, report, topside, for, immediate, questioning Attention. All science personnel, report topside for immediate questioning.
C1A3_1 buzwarn (2x), all, personnel, evacuate, high, security, materials, storage, facility All personnel evacuate High Security Materials Storage Facility.
C1A3_2 bizwarn (2x), emergency, uranium, containment, team, to, sector, d Emergency Uranium Containment Team to Sector D.
C1A3_3 deeoo, turret, maintenance, team, to, central, command, and, communication, center Turret maintenance team to Central Command and Communication Center.
C1A3_4 buzwarn (2x), military, personnel, prosecute, kilo, india, lima, with, extreme, force Military personnel, prosecute Kilo-India-Lima with extreme force.
C1A3_5 bizwarn (3x), attention, this, announcement, system, now, under, military, command Attention. This announcement system now under military command.
C1A3_6 buzwarn (2x), search, and, destroy, force, bravo, reports, secondary, objective, terminated Search and Destroy Force Bravo reports secondary objective terminated.
C1A3_7 buzwarn (2x), bravo, force, reports, hotel, sierra, mike, facility, is, secured Bravo Force reports Hotel-Sierra-Mike facility is secured.
C1A3_8 bizwarn (2x), attention, all, military, personnel, atomic, biological, chemical, alert Attention. All military personnel, atomic biological chemical alert.
C1A3_9 bizwarn (2x), attention, all, military, personnel, extreme, atomic, biological, chemical, alert Attention. All military personnel, extreme atomic biological chemical alert.
C1A3_10 bizwarn (3x), attention, black, mesa, announcement, system, now, under, military, command Attention. Black Mesa Announcement System now under military command.
C1A3_warn buzwarn (2x), attention, security, lockout, alert, security, door, will, engage Attention. Security lockout alert. Security door will engage.
C1A3_lock bizwarn (2x), security, door, engaged, five, buzwarn, four, buzwarn, three, buzwarn, two, buzwarn, one, buzwarn, lockout, activated Security door engaged. Five. Four. Three. Two. One. Lockout activated.

Experimental Propulsion Laboratory (Unused)[edit]

Sentence name Filename(s) Quote
C1A4_0 buzwarn (2x), attention, experimental, rocket, test, fire, disengaged Attention. Experimental rocket test fire disengaged.
C1A4_1 deeoo, repair, crew, report, to, track, control, sector, e Repair crew, report to Track Control, Sector E.
C1A4_2 deeoo, maintenance, team, blue, check, heat, exchange, coolant, level Maintenance Team Blue, check heat exchange coolant level.
C1A4_3 deeoo, maintenance, team, green, check, voltage, on, cable, seven, two, nine Maintenance Team Green, check voltage on Cable 729.
C1A4_4 buzwarn (2x), medical, team, to, materials, storage, facility, team, bravo, reports, men, down Medical Team to Materials Storage Facility, Team Bravo reports men down.
C1A4_5 buzwarn (2x), alpha, force, move, out, science, personnel, resistance, extreme Alpha Force move out, science personnel resistance extreme.
C1A4_6 buzwarn (2x), attention, all, black, mesa, security, personnel, wanted, for, immediate, questioning Attention. All Black Mesa security personnel wanted for immediate questioning.
C1A4_7 buzwarn (2x), attention, gordon, freeman, report, to, military, personnel, for, immediate, security, check Attention. Gordon Freeman, report to military personnel for immediate security check.
C1A4_8 buzwarn (2x), warning, hostile, biological, forms, detected, in, track, control, sector, e Warning. Hostile biological forms detected in Track Control, Sector E.
FUEL_OFF fuel, and, power, must, be, engaged, to, activate, rocket, test, fire Fuel and power must be engaged to activate rocket test fire.

Track Control[edit]

Sentence name Filename(s) Quote
C2A1_0 buzwarn (2x), warning, track, power, failure, check, lower, level, power, plant Warning. Track power failure. Check lower level power plant. (Unused)
C2A1_1 deeoo, maintenance, team, yellow, please, service, relay, three, hundred, ninety, four Maintenance Team Yellow, please service Relay 394. (Unused)
C2A1_2 dadeda, attention, gordon, freeman, report, to, military, personnel, for, immediate, security, check Attention. Gordon Freeman, report to military personnel for immediate security check. (Unused)
C2A1_3 buzwarn (2x), delta, team, reports, launch, control, secured Delta Team reports Launch Control secured. (Unused)
C2A1_4 bizwarn (3x), danger, turret, defense, systems, activated, silo, e Danger. Turret defense systems activated, Silo E. (Unused)
C2A1_5 deeoo, sector, e, track, control, please, report, status Sector E Track Control, please report status. (Unused)
C2A1_6 buzwarn (2x), echo, force, reports, perimeter, breach, sector, e Echo Force reports perimeter breach, Sector E. (Unused)
C2A1_7 buzwarn (2x), attention, search, and, destroy, force, go, to, code, three, eliminate, all, biological, forms Attention. Search and Destroy Force go to Code 3. Eliminate all biological forms. (Unused)
C2A1_8 bizwarn, danger, unauthorized, detonation, detected, in, experimental, propulsion, laboratory Danger. Unauthorized detonation detected in Experimental Propulsion Laboratory. (Unused)
POWER_OFF main, power, is, not, on Main power is not on. (The only one of the area to be used, it is heard at the Gargantua scene, only if the tram is approached before power is restored.)
POWER_ON main, power, is, on Main power is on. (Unused)

High Altitude Launch Center (unused)[edit]

Sentence name Filename(s) Quote
C2A2_0 buzwarn (2x), attention, clear, silo, e, launch, area, immediately Attention. Clear Silo E launch area immediately.
C2A2_1 deeoo, containment, inspection, team, to, advanced, biological, research, laboratory Containment Inspection Team to Advanced Biological Research Laboratory.
C2A2_2 buzwarn (2x), medical, team, to, sector, e, echo, team, has, men, down Medical team to Sector E, Echo Team has men down.
C2A2_3 buzwarn (2x), alert, military, personnel, authorized, to, prosecute, gordon, freeman, with, extreme, force Alert. Military personnel, authorized to prosecute Gordon Freeman with extreme force.
C2A2_3 buzwarn (2x), alert, military, personnel, you, are, authorized, to, shoot, the, renegade, on, sight Alert. Military personnel, you are authorized to shoot the renegade on sight.
C2A2_4 buzwarn (2x), alert, squad, in, silo, e, freeman, may, be, operating, inside, your, perimeter Alert. Squad in Silo E, Freeman may be operating inside your perimeter.
C2A2_5 deeoo (2x), launch, control, train, activity, detected Launch Control train activity detected.
C2A2_6 buzwarn (2x), medical, team, to, sector, e, echo, team, squad, failed, to, reach, checkpoint Medical team to Sector E, Echo Team squad failed to reach checkpoint.
C2A2_7 deeoo (2x), satellite, rocket, loading, bay, reports, status, green Satellite Rocket Loading Bay reports status green.
C2A2_launch deeoo (3x), satellite, launch, system, activated, five, deeoo, four, deeoo, three, deeoo, two, deeoo, one, deeoo, launch, is, go Satellite launch system activated. Five. Four. Three. Two. One. Launch is go.

Advanced Biological Research Lab and Biological Waste Processing Plant (Unused)[edit]

Sentence name Filename(s) Quote
C2A4_0 buzwarn (2x), warning, emergency, containment, system, activated Warning. Emergency containment system activated.
C2A4_1 bizwarn (2x), alert, biological, containment, breach, detected Alert. Biological containment breach detected.
C2A4_2 bizwarn (2x), warning, biological, sterilization, system, activated Warning. Biological sterilization system activated.
C2A4_3 buzwarn (2x), attention, hostile, alien, military, force, detected, advanced, biological, research, laboratory Attention. Hostile alien military force detected, Advanced Biological Research Laboratory.
C2A4_4 buzwarn (2x), search, and, destroy, force, reports, back, up, required, engaged, with, extreme, resistance Search and Destroy Force reports backup required, engaged with extreme resistance.
C2A4_5 buzwarn (2x), topside, containment, force, alert, hostile, alien, military, force, detected Topside Containment Force alert, hostile alien military force detected.
C2A4_6 deeoo (2x), high, power, laser, status, is, green High Power Laser status is green.
C2A4_7 bizwarn (2x), alien, containment, system, failure, use, sterilization, chamber Alien containment system failure, use sterilization chamber.
C2A4_8 bizwarn (2x), attention, all, topside, military, personnel, clear, helicopter, hangar, four Attention. All topside military personnel, clear Helicopter Hangar 4.
C2A4_9 bizwarn (2x), alien, breach, topside, checkpoint, alpha, checkpoint, delta Alien breach, Topside Checkpoint Alpha, Checkpoint Delta.
C2A4_10 buzwarn (2x), alert, topside, containment, force, use, any, force, to, prosecute, gordon, freeman, you, are, authorized, to, shoot, on, sight Alert. Topside Containment Force, use any force to prosecute Gordon Freeman. You are authorized to shoot on sight.
C2A4_11 buzwarn (2x), alert, topside, containment, force, freeman, may, approach, your, perimeter Alert. Topside Containment Force, Freeman may approach your perimeter.
C2A4_12 gordon, all, science, personnel, will, be, terminated, until, you, surrender Gordon, all science personnel will be terminated until you surrender. (in the "sentences.txt" of Half-Life: Day One, "C3A2_2" is an alternate version of this sentence)
C2A4_ster bizwarn (2x), sterilization, system, activated Sterilization system activated.

Central Command and Communication Center (Unused)[edit]

Sentence name Filename(s) Quote
C3A1_0 buzwarn (2x), warning, primary, antenna, failure, detected Warning. Primary Antenna failure detected.
C3A1_1 buzwarn (2x), clear, topside, motorpool, for, emergency, medical, helicopter Clear Topside Motorpool for emergency medical helicopter.
C3A1_2 buzwarn (2x), warning, topside, armory, security, bypass, detected, Warning. Topside Armory security bypass detected.
C3A1_3 bizwarn (2x), warning, radiation, leak, detected, in, primary, antenna, area Warning. Radiation leak detected in Primary Antenna area.
C3A1_4 buzwarn (2x), search, and, destroy, force, kilo, central, command, reports, hostile, alien, force, inside, perimeter Search and Destroy Force Kilo, Central Command reports hostile alien force inside perimeter.
C3A1_5 buzwarn (2x), message, for, gordon, freeman, you, will, not, escape, this, time Message for Gordon Freeman, you will not escape this time.
C3A1_6 buzwarn (2x), attention, all, units, renegade, freeman, is, now, your, primary, target Attention. All units, renegade Freeman is now your primary target. (The word "Unit" doesn't exist in the sound files, it was roughly recreated for the wiki.)
C3A1_7 buzwarn (2x), alert, remaining, containment, force, freeman, may, have, experimental, weapon Alert. Remaining Containment Force, Freeman may have experimental weapon.
C3A1_8 buzwarn (2x), all, personnel, evacuate, lambda, complex, extreme, dimensional, malfunction, detected All personnel evacuate Lambda Complex, extreme dimensional malfunction detected.
C3A1_9 bizwarn (2x), fire, control, team, to, topside, armory, checkpoint, delta, topside, hydro, plant Fire Control Team to Topside Armory, Checkpoint Delta, Topside Hydro Plant.

Lambda Reactor Coolant System[edit]

Heard in the hub of the Lambda Reactor Coolant System of Sector F's Lambda Reactor Complex. "sentences.txt" also mentions as a location the unidentified Radioactive Materials Handling Bay, also mentioned in a message heard in Sector C before the incident.

Sentence name Filename(s) Quote
C3A2_0 bizwarn (2x), warning, cross, dimensional, power, field, activity, detected Warning. Cross-dimensional power field activity detected.
C3A2_1 bizwarn (2x), warning, unauthorized, biological, force, detected, in, cross, dimensional, power, field Warning. Unauthorized biological force detected in cross-dimensional power field.
C3A2_2 buzwarn (2x), all, personnel, evacuate, lambda, complex, extreme, dimensional, malfunction, detected All personnel evacuate Lambda Complex, extreme dimensional malfunction detected. (Same as "C3A1_8")
C3A2_2 (Day One) buzwarn (2x), gordon, all, science, personnel, will, be, terminated, until, you, evacuate, that, area Gordon, all science personnel will be terminated until you evacuate that area. (An alternate version of "C2A4_12", this sentence is found instead of the final one in the "sentences.txt" of Half-Life: Day One)
C3A2_3 bizwarn (3x), unauthorized, activity, detected, in, main, reactor, core, Unauthorized activity detected in Main Reactor Core.
C3A2_4 bizwarn (2x), danger, high, energy, exchange, detected, in, radioactive, materials, handling, bay Danger. High energy exchange detected in Radioactive Materials Handling Bay.
C3A2_5 bizwarn (2x), biological, force, detected, in, primary, coolant, system Biological force detected in Primary Coolant System.
C3A2_6 bizwarn (2x), lambda, complex, reports, dimensional, contamination Lambda Complex reports dimensional contamination.
C3A2_7 bizwarn (2x), lambda, complex, reports, dimensional, containment, system, failure Lambda Complex reports dimensional containment system failure.

Lambda Reactor Complex (Unused)[edit]

Sentence name Filename(s) Quote
C3A2_target bloop (2x), satellite, target, system, engaged Satellite target system engaged.
C3A2_portal bizwarn (3x), warning, cross, dimensional, portal, device, power, level, is, one, hundred, twenty, percent Warning. Cross-Dimensional Portal Device power level is 120%.
C3A2_core bizwarn (3x), attention, lambda, complex, personnel, primary, core, activated Attention. Lambda Complex personnel, Primary Core activated.

Other areas[edit]

Sentence prefix "C2A3" is featured in "sentences.txt" and presents the related areas as "silent", i.e. without any planned announcements. The areas include the unknown Observation Tank 1 mentioned in a message heard in Sector C before the incident and the cryogenic facility visited in the unnamed industrial area set between the Materials Transport and the Biological Waste Processing Plant.

Another prefix, "C2A5", presents the following silent topside areas: the unknown Tactical Operations Center mentioned in a message heard in Sector C before the incident, the Topside Motorpool and its Topside Armory, barracks and hangars, the Topside Hydro Plant, and the unknown Topside Checkpoints Alpha (to be mentioned in the Advanced Biological Research Lab), Bravo (mentioned in Sector C) and Delta (to be mentioned in the Advanced Biological Research Lab and Central Command and Communication Center). These unknown locations either still appear in-game in some form albeit without being clearly identified or were simply cut.

Half-Life: Opposing Force[edit]

Location: sound/vox/

Black Mesa Medical Lab[edit]

The sentence names are the same as those used in the first part of the Anomalous Materials Test Labs and Control Facilities in Half-Life.

Sentence name Filename(s) Quote
C1A0_0 bloop, immediate, medical, attention, required, in, sector, twenty, seven Immediate medical attention required in Sector 27.
C1A0_1 doop, operations, personnel, report, to, emergency, control, zone, for, contamination, cleanup, alpha, seven, access, required Operations personnel, report to Emergency Control Zone for contamination clean-up, Alpha 7 access required.
C1A0_2 attention, supply, team, required, in, lower, maintenance, chamber, sub, sector, b Attention. Supply Team required in Lower Maintenance Chamber Sub-Sector B.
C1A0_3 doop, security, breach, detected, in, silo, thirty, two Security breach detected in Silo 32.
C1A0_4 warning, extreme, radiation, leak, detected, in, reactor, core, eight, time, to, reach, minimum, safe, distance, fourteen, minutes Warning. Extreme radiation leak detected in Reactor Core 8. Time to reach minimum safe distance: 14 minutes.
C1A0_5 dadeda, doctor, guthrie, report, to, inspection, lab, six, immediately Dr. Guthrie, report to Inspection Laboratory 6 immediately.
C1A0_6 attention, doctor, freeman, report, to, research, administration, center, for, questioning Attention. Dr. Freeman, report to Research Administration Center for questioning.
C1A0_7 deeoo, remaining, science, personnel, report, to, medical, lab, six, for, radiation, exposure, inspection Remaining science personnel, report to Medical Laboratory 6 for radiation exposure inspection.
C1A0_8 warning, severe, damage, detected, in, ventillation (sic), systems, under, research, lab, two, evacuate, area, immediately Warning. Severe damage detected in ventilation systems under Research Laboratory 2, evacuate area immediately.

Half-Life: Blue Shift[edit]

Location: sound/vox/

Sector G Main Access Lift[edit]

Heard at the start of the game, when the elevator fails.

Sentence name Filename(s) Quote
VOX_ELEV1 deeoo, warning, main, power, failure, in, levels, 3, 5, and, 8, deeoo Warning. Main power failure in Levels 3, 5 and 8.
VOX_ELEV2 deeoo, warning, extreme, electromagnetic, field, hazard, in, sector, c, deeoo Warning. Extreme electromagnetic field hazard in Sector C.

Half-Life: Decay[edit]

Location: sound/vox/

Anomalous Materials Operations Center[edit]

Sentence name Filename(s) Quote
HT01_0 deeoo, attention, doctor, freeman, report, to, anomalous, materials, laboratory Attention. Dr. Freeman, report to Anomalous Materials laboratory.
HT01_1 deeoo, doctor, cross, and, doctor, green, you, are, required, in, the, anomalous, materials, operations, center Dr. Cross and Dr. Green, you are required in the Anomalous Materials Operations Center.
HT01_2 deeoo, all, security, personnel, check, clearance, with, inspector, white All security personnel, check clearance with Inspector White.
HT01_3 deeoo, attention, science, team, decontamination, required, in, anomalous, materials, laboratory Attention. Science Team, decontamination required in Anomalous Materials laboratory.
HT01_4 dadeda, attention, topside, leave, has, not, been, authorized, with, administration Attention. Topside leave has not been authorized with administration.
HT01_5 buzwarn (2x), warning, do, not, deactivate, containment, field, systems Warning. Do not deactivate containment field systems. ("deactivate" was specially made for Decay from the Half-Life file "deactivated")
HT01_6 bloop, announcement, topside, satellite, communication, dish, has, been, disengaged Announcement. Topside satellite communication dish has been disengaged.
HT01_7 dadeda, laser, containment, system, access, is, forbidden, to, inspection, personnel Laser containment system access is forbidden to inspection personnel.
HT01_8 bloop, announcement, waste, disposal, control, will, proceed, at, one, thirty, five Announcement. Waste disposal control will proceed at 1:35.
HT01_9 dadeda, anomalous, materials, test, not, open, to, unauthorized, personnel Anomalous Materials test not open to unauthorized personnel.
CROSSDOOR doctor, cross, access, granted Dr. Cross, access granted. (Unused)
GREENDOOR doctor, green, access, granted Dr. Green, access granted. (Unused)
GREENDOOR2 doctor, green, access, denied Dr. Green, access denied. (Unused)

Training Facility[edit]

Sentence name Filename(s) Quote
N/A security, breach, detected Security breach detected.
N/A security, override, activated Security override activated.
N/A security, override, deactivated Security override deactivated.
N/A secure, access, corridor, disengaged Secure access corridor disengaged.

Level 3 Dormitories[edit]

Some announcements have a lower pitch, not reproduced here.

Sentence name Filename(s) Quote
HT05_0 buzwarn (2x), attention, all, science, personnel, evacuate, level, three, immediately Attention. All science personnel evacuate Level 3 immediately.
HT05_1 bizwarn (3x), attention, this, announcement, system, now, under, military, command Attention. This announcement system now under military command. (Same as "C1A3_5")
HT05_2 bizwarn (3x), attention, black, mesa, announcement, system, now, under, military, command Attention. Black Mesa Announcement System now under military command. (Same as "C1A3_10")
HT05_3 bizwarn (3x), attention, science, team, report, to, nearest, security, checkpoint, immediately Attention. Science Team, report to nearest security checkpoint immediately.
HT05_4 bizwarn (2x), attention, all, military, personnel, intruder, detected, in, level, three Attention. All military personnel, intruder detected in Level 3.
HT05_5 buzwarn (2x), attention, all, science, personnel, report, to, north, transportation, platform, immediately Attention. All science personnel, report to north transportation platform immediately.
HT05_6 buzwarn (2x), warning, unauthorized, biological, forms, detected, in, ventillation (sic), system Warning. Unauthorized biological forms detected in ventilation system. (Same as "C1A2_4")
HT05_7 buzwarn (2x), charlie, team, reports, bravo, foxtrot, johnson, facility, is, secured Charlie Team reports Bravo-Foxtrot-Johnson facility is secured.
HT05_8 buzwarn (2x), search, and, destroy, squad, alpha, reports, secondary, objective, terminated Search and Destroy Squad Alpha, reports secondary objective terminated.

General announcements[edit]

Location: sound/vox/

Most appear only in Half-Life, although the majority is never used.

Countdown (Unused)[edit]

Sentence name Filename(s) Quote
CTR20 twenty, seconds, remaining Twenty seconds remaining.
CTR19 nineteen Nineteen.
CTR18 eighteen Eighteen.
CTR17 seventeen Seventeen.
CTR16 sixteen Sixteen.
CTR15 fifteen, seconds, remaining Fifteen seconds remaining.
CTR14 fourteen Fourteen.
CTR13 thirteen Thirteen.
CTR12 twelve Twelve.
CTR11 eleven Eleven.
CTR10 ten, seconds, remaining Ten seconds remaining.
CTR9 nine Nine.
CTR8 eight Eeight.
CTR7 seven Seven.
CTR6 six Six.
CTR5 five, seconds, remaining Five seconds remaining.
CTR4 four Four.
CTR3 three, seconds Three seconds.
CTR2 two Two.
CTR1 one, second One second.
CTR0 zero Zero.

Dangers (Unused)[edit]

Biohazard danger[edit]

Sentence name Filename(s) Quote
DB0 danger, liquid, biohazard, leak, in, immediate, area Danger. Liquid biohazard leak in immediate area.
DB1 danger, coolant, leak, severe, biohazard, now, in, this, area Danger. Coolant leak. Severe biohazard now in this area.
DB2 danger, liquid, biohazard, released, evacuate, area Danger. Liquid biohazard released. Evacuate area.
DB3 danger, biohazard, detected, in, immediate, area Danger. Biohazard detected in immediate area.

Chemical danger[edit]

Sentence name Filename(s) Quote
DC0 danger, chemical, leak, area, now, a, high, health, hazard Danger. Chemical leak. Area now a high health hazard.
DC1 danger, chemical, coolant, leak, health, hazard, zone Danger. Chemical coolant leak. Health hazard zone.
DC2 danger, chemical, containment, breach, all, personnel, evacuate, this, area Danger. Chemical containment breach. All personnel evacuate this area.
DC3 danger, supercooled, chemical, leak Danger. Supercooled chemical leak.
DC4 danger, supercooled, helium, leak Danger. Supercooled helium leak.

Radiation danger[edit]

Sentence name Filename(s) Quote
DR0 danger, radiation, leak, detected Danger. Radiation leak detected.
DR1 danger, radiation, hazard, detected Danger. Radiation hazard detected.
DR2 danger, high, radiation, level, detected Danger. High radiation level detected.
DR3 danger, severe, radiation, hazard, evacuate, area, immediately Danger. Severe radiation hazard. Evacuate area immediately.
DR4 danger, safety, violation, extreme, radiation, level, detected Danger. Safety violation. Extreme radiation level detected.

Doors[edit]

Access denied[edit]

Used when the player repeatedly attempts to open the door leading to the Transit System at the very end of the Hazard Course without asking a security guard (in Half-Life) or Rosenberg (in Decay) to do it as required by the course.

Sentence name Filename(s) Quote
NA0 access, denied Access denied.
NA1 access, is, denied Access is denied.
NA2 unauthorized, access Unauthorized access. (reused for sentence "NA5")
NA3 Illegal access Illegal access.
NA4 this, door, is, locked This door is locked.
NA6 entry, forbidden Entry forbidden.
NA7 entry, not, permitted Entry not permitted.
NA8 no, unauthorized, personnel No unauthorized personnel.
NA9 you, do, not, have, access, to, this, facility You do not have access to this facility.
NA10 sorry, you, may, not, enter Sorry, you may not enter.
NA11 sorry, this, door, is, locked Sorry, this door is locked.
NA12 please, move, away, from, this, area Please, move away from this area.
NA13 please, move, away, from, door Please, move away from door.
NA14 you, will, not, get, in You will not get in.
NA15 entry, is, not, an, option Entry is not an option.
NA16 will, we, do, this, all, day Will we do this all day?
NA17 move, on, immediately Move on immediately.
NA18 No, no, and, no No, no, and no. (In-game, the last "no" is pitched to a lower pitch, roughly remade for the wiki)

Access granted (Unused)[edit]

Sentence name Filename(s) Quote
EA0, EA8 access, granted Access granted.
EA1 access, permitted Access permitted.
EA2 entry, granted Entry granted.
EA3 entry, permitted Entry permitted.
EA4, EA6 access, authorized Access authorized.
EA5 entry, is, permitted Entry is permitted.
EA7 access, to, facility, granted Access to facility granted.

Blast door[edit]

Sentence name Filename(s) Quote
NF0 emergency, blast, door, activated Emergency blast door activated. (Near Sector E's Launch Control, if touching the exit door before or after launching the rocket.)
NF1 emergency, blast, shield, activated Emergency blast shield activated. (Near Sector E's Launch Control, if touching the exit door before or after launching the rocket.)
NF3 the, blast, containment, shield, is, down The blast containment shield is down. (Unused)
EF0 emergency, blast, door, open Emergency blast door open. (Unused)
EF1 emergency, blast, shield, deactivated Emergency blast shield deactivated. (Unused)
EF3 blast, containment, shield, is, open Blast containment shield is open. (Unused)

Broken locked door[edit]

Heard upon trying to open the door to Supply B-301 located behind debris in Level A of Sector F's Lambda Reactor Core.

Sentence name Filename(s) Quote
NG0 sorry, this, door, is, inoperative Sorry, this door is inoperative.
NG1 sorry, door, out, of, service Sorry, door out of service.
NG2 door, damage, detected, please, call, service, personnel Door damage detected. Please call service personnel.

Chemical door (Unused)[edit]

Sentence name Filename(s) Quote
NCHEM0 chemical, leak, containment, door, activated Chemical leak containment door activated.
ECHEM0 chemical, leak, containment, door, open Chemical leak containment door open.

Fire door[edit]

Sentence name Filename(s) Quote
NFIRE0 fire, containment, door, is, down Fire containment door is down. (Used in Sector D's High Security Materials Storage Area)
EFIRE0 fire, containment, door, open Fire containment door open. (Unused)

Generic containment door[edit]

Sentence name Filename(s) Quote
NCON0 emergency, containment, door, engaged Emergency containment door engaged. (Heard at the containment door in the outdoor area before taking the elevator to the Black Mesa Central Complex)
ECON0 emergency, containment, door, disengaged Emergency containment door disengaged. (Unused)

Maintenance door (Unused)[edit]

Sentence name Filename(s) Quote
NH0 no, access, maintenance, area No access. Maintenance area.
NH1 no, personnel, permitted, in, maintenance, area No personnel permitted in maintenance area.
EH0 maintenance, area, access, granted Maintenance area access granted.
EH1 maintenance, area, door, open Maintenance area door open.

Radiation door (Unused)[edit]

Sentence name Filename(s) Quote
NRAD0 radiation, containment, door, activated Radiation containment door activated.
ERAD0 radiation, containment, door, open Radiation containment door open.

Security lookout mode (Unused)[edit]

Sentence name Filename(s) Quote
ND0 security, lock, is, engaged Security lock is engaged.
ND1 secure, area, no, entry Secure area. No entry.
ND2 security, lockout, no, entry Security lockout. No entry.
ND3 secure, door, no, entry Secure door. No entry.
ND4 security, system, in, force Security system in force.
ND5 security, system, armed, no, entry Security system armed. No entry.
ND6 door, is, secured Door is secured.
ND7 illegal, access, move, away Illegal access. Move away.
ED0 security, lock, disengaged Security lock disengaged.
ED1 security, clear, proceed Security clear. Proceed.
ED2 security, lockout, released Security lockout released.
ED3 secure, override, accepted Secure override accepted.
ED4 security, access, acknowledged Security access acknowledged.
ED5 security, system, disengaged Security system disengaged.
ED6 door, security, disengaged Door security disengaged.

Turrets (Unused)[edit]

Sentence name Filename(s) Quote
T0 extreme, hazard, defense, system, is, armed, in, this, zone Extreme hazard defense system is armed in this zone.
T1 hazard, area, defense, system, activated Hazard area defense system activated.
T2 danger, turret, perimeter, defense, system, armed Danger. Turret perimeter defense system armed.
T3 extreme, hazard, nearest, defense, system, engaged Extreme hazard. Nearest defense system engaged.
T4 danger, base, defense, turret, system, may, power, up Danger. Base defense turret system may power up.
T5 danger, automatic, defense, system, activated Danger. Automatic defense system activated.

Warnings (Unused)[edit]

Sentence name Filename(s) Quote
WE0 warning, high, voltage, cable Warning. High voltage cable.
WE1 warning, high, power, cable Warning. High power cable.
WE2 warning, electric, shock, hazard Warning. Electric shock hazard.
WE3 warning, severe, electric, shock, hazard Warning. Severe electric shock hazard.

Notification sounds[edit]

Location: sound/vox/

The various notification sounds starting the Black Mesa Announcement System's messages.

Filename(s) Quote
bizwarn "Bizwarn" sound
bloop "Bloop" sound
buzwarn "Buzwarn" sound
dadeda "Dadeda" sound
deeoo "Deeoo" sound
doop "Doop" sound

Other[edit]

Location: N/A

Older version of the voice, from an unofficial Half-Life Desktop Theme. The sound files were provided by Valve.

Filename(s) Quote
theme_authorized Authorized.
theme_unauthorized Unauthorized.