List of Portal soundscapes

Below are the list of Portal soundscapes, separated by the Test Chamber levels and the Escape levels.

An updated Portal FGD that lets you select soundscapes from within Hammer.

Test Chamber soundscapes

Name	Description and Notes
portal_testchmb.fixed_portal	Short different-pitched hums, sounds like distant voices. Position 0 is the fixed Portal you want the player guided to. Seems to be unused.
portal_testchmb.tight_space	An intermittent low humming sound and some quiet whoosh noises. Use in small rooms.
portal_testchmb.elevator_shaft	A continuous moving elevator sound. Use in elevators.
portal_testchmb.get_the_box	A continuous low humming sound. Unused?
portal_testchmb.explore_space	Low humming sound, with intermittent ticking and whirring sounds. Use in medium-sized rooms
portal_testchmb.cross_the_gap	Far away noises and faint wind sounds. Gives the impression of being very high. Position 0 is the location across the gap where the Portal should be put.
portal_testchmb.energy_ball	Very low-pitched hum with high and low pitched hums alternating in the background. Use in rooms with high energy pellets.
portal_testchmb.goo_pit	Various bubbling sounds. Use in rooms with hazard liquid.
portal_testchmb.cleanser	Pulsing low hum. Use in rooms with fizzlers.
portal_testchmb.fling	Low humming sounds, thumping, and distant chanting from Ravenholm. Use in room where you need to fling.
portal_testchmb.turret_danger	Long whiney sounds, with a constant deep humming. Use in rooms with turrets.
portal_testchmb.use_your_box	Low hum, quiet whoosh, and distant whining sound. Position 0 is the box you want the player to use. Use with Super Colliding Super Buttons.
portal_testchmb.track_train	Low hum with high-pitched whoosh noises in the background. Use with light rail platforms.
portal_testchmb.fire_pit	Fire cracking sounds.

Escape soundscapes

Name	Description and Notes
portal_escape.tube	Loud wind noise to imitate the suction of the tubes.
portal_escape.intro	Low hum, intermittent squeaking sounds, and metal catwalk creaks.
portal_escape.in_shaft_low	Low hum, quiet whooshes, and random distant slamming sounds.
portal_escape.in_shaft_high	Loud wind noise, creaking sounds and random distant slamming sounds. Gives impression of wide open area.
portal_escape.nearing_boss	Loud wind sounds, loud creaking sounds, distant thumping noise. Gives impression of very huge room.
portal_escape.final_boss	Quiet wind sounds, distant thumping, low, pulsing hum.
portal_escape.final_boss2	Silence.
portal_escape.hazard_liquid_tunnel	Dripping and bubbling sounds. Comparable to a sewer atmosphere.