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29 eax spaces

sourceverb

sourceVerb's interface.

Twenty-nine rooms off a 1998 disc, and a squeeze that takes a clean modern vocal all the way back to sounding like a sound effect somebody pulled off it.

  • codec
  • mix
OS (Mac)
macOS 11 Big Sur or later
OS (Windows)
Windows 10 or later
CPU
Intel or Apple Silicon / AMD or Intel x64
RAM
4 GB minimum, 8 GB recommended

You knew every one by ear.

a vent, a stairwell, a cave, a flooded basement — the same 29 rooms, every game, for years.

a game in the late 90s did not simulate a room. it picked one off a list. every space you walked into — a vent, a stairwell, a cave, a flooded basement — was one of the same 29 rooms, and after enough hours you knew every one of them by ear. SourceVerb is that list of rooms.

there is a second half to it. back then the sound had to fit on a disc, so everything got squeezed until it was thin and grainy. SourceVerb does that squeeze too, and you decide how far it goes — a little, for something that just sounds old, or all the way, until a clean modern vocal comes out the other side sounding like a sound effect somebody pulled off a 1998 disc.

it is not trying to be a real room. it is trying to be the memory of one.

pick a space and the CRT shows you where you are standing — a cave, a hangar, a sewer pipe, underwater — with the glitch wipe and the title card the era came with.

macOS (AU and VST3) and Windows (VST3).

  • 29 rooms, from a padded cell to somewhere going badly wrong
  • squeeze the sound until it falls apart, or barely at all
  • a switch for the underwater half of the era
  • a CRT that shows you the room you are standing in
  • macOS (AU + VST3) · Windows (VST3)

SourceVerb is an independent product. it is not affiliated with, endorsed by or sponsored by Valve Corporation or Creative Technology Ltd. Half-Life is a trademark of Valve Corporation. it is named here only to describe the sound this plugin emulates.

codec

drop it to 8 kHz and 8-bit and it stops sounding like a plugin and starts sounding like a sound effect loaded off a 1998 disc.

mix

rev mix sets how much room you are standing in, wet/dry sets how much of it you keep.

requirements

OS (Mac)
macOS 11 Big Sur or later
OS (Windows)
Windows 10 or later
CPU
Intel or Apple Silicon / AMD or Intel x64
RAM
4 GB minimum, 8 GB recommended
Size
20 MB
Formats
VST3, AU (macOS) · VST3 (Windows)

versions

version date notes
1.0.0 2026-07-31 Initial release
one-time licence · instant download

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Reduced motion is on — the transcription, the plane renderer and the loader are all rendering their finished state directly.