Fog Convolver 2

Creative Convolution

Fog Convolver 2, Creative Convolution Reverb Plugin

True Stereo Convolution

Fog Convolver 2 is a true stereo convolution reverb/processor plugin. This new version has been rewritten and redesigned from scratch, and now features modulation, effects, an impulse response generator, and a lot of improvements.

You can now load 2 separate impulse responses (or one true stereo/quad channel impulse response) and have separate or linked controls for both. There are 5 different routing modes to arrange the impulses: single, serial, parallel, parallel mix, and true stereo.
Each impulse can have 2 LFOs, with 10 waveforms and 18 destinations, one dedicated multi-mode filter (with pre, IR, or post modes), and a 5-band graphic EQ.

Fog Convolver features 8 factory banks with more than 660 impulse responses made from spaces, analog and digital equipment, organic sources, and more.

Easy Drag and Drop

You can easily load any audio file (WAV or AIFF) into Fog Convolver with a simple Drag and Drop, or by using the built-in browser. If you drag two files, they will be assigned to IR1 and IR2.

True Stereo

True Stereo impulses are usually recorded simultaneously to capture a better stereo image, but you can also use two unrelated IRs to create experimental stereo reverbs.

Impulse Generator

If you don’t want to use any previous impulse responses or samples, you can use the built-in impulse response generator to create your own artificial spaces.

8 Banks

Craft Spaces
Reverbs of all kinds, from early digital effect processors to real spaces, including noise sources from vintage synths.

211 Impulses

Old Times
Impulse responses from old public domain recordings divided into 4 categories: 78 RPM, NASA, Radio, and Wax Cylinders. Most of the samples come from the Internet Archive.

40 Impulses

A selection of impulse responses from the OpenAIR database, including Churches, Halls, Chambers, and an old Nuclear Reactor.

83 Impulses

Organic Compounds
Structures were detected using Nuclear magnetic resonance (NMR) spectroscopy to obtain physical, chemical, electronic, and structural information about molecules.

45 Impulses

Custom impulse responses made by “Bitwig Guru” Polarity using white noise, Dirac samples, granulators, and many many modulations.

67 Impulses

Test Equipment
Noise, glitch, and tone impulse responses made using only test equipment (Hainbach style!).

45 Impulses

As the name implies, all kinds of objects, instruments, electronics, and organic samples used to create spaces, echoes, drones, and unique tones.

108 Impulses

Vintage Mics
Impulse responses of vintage microphones from 20 manufacturers. Mostly ribbon microphones from the 30s to the 70s.
Courtesy of the Microphone Impulse Response Project.

65 Impulses

How does Convolution work?

Convolution works by applying the sonic character of an impulse response to another sound in real-time. You can use Fog Convolver to add reverberation, create special effects, and apply an acoustic impulse captured from audio equipment.

An impulse response is a recording of the output that is caused by an acoustic space or electronic gear when an impulse is played (electric spark, starter pistol shot, boards clap, or the bursting of a balloon).

Fog Convolver 2 Demo

Try Fog Convolver 2 for free with some limitations: limited selections of IRs, silence for 3 seconds every 2 minutes, saving disabled.
It’s not possible to authorize the demo version, you’ll find the full version installer in your user area.


Requires macOS 10.9 or newer
AU, VST2, VST3, AAX, CLAP (64bit only)


Requires Windows 7 or newer
VST2, VST3, AAX, CLAP (64bit only)


Requires Ubuntu 20.04 or newer
VST2, VST3, CLAP (64bit only)


  • Lightweight Real-Time Convolution Engine
  • 5 Modes including True Stereo
  • Dual IR Engine with Parameter Link
  • 4 LFOs with multiple destinations
  • 2 Multi-mode Filters
  • Chorus, Phaser, Compressor, Waveshaper
  • Impulse Response Generator
  • Preset Browser with customizable categories, tags, ratings, …
  • 660 Impulse Responses
  • Resizable Window
  • Preset system with randomizer

Download the Manual (PDF)

System Requirements

 Windows 7, 8, 10, 11
2GHz CPU, 4 GB RAM, 1.5 GB HD
VST2, VST3, AAX, CLAP (64-bit)

 OS X 10.9 – macOS 13
2GHz CPU, 4 GB RAM, 1.5 GB HD
VST2, VST3, AU, AAX, CLAP (64-bit)
Universal 2 Binary

 Ubuntu 20.04 LTS
VST2, VST3, CLAP (64-bit)

Copy Protection

To activate your plugin you can choose between Online and Offline authorization.
Create an account, log in through the plugin to activate, or download your license file for offline activation.


1 license up to 3 computers

No iLok

We don’t like dongles

No Internet

No connection required to activate

2022/12/06: v2.1.1

  • Fixed: Some Look and Feel inconsistencies
  • Fixed: LFO EQ destinations not working properly

2022/12/02: v2.1

  • Added: macOS 13 Ventura support
  • Added: Windows 11 support
  • Added: Linux VST2, VST3, CLAP plugin formats
  • Added: New setting “Mute IR when Bypassed”
  • Added: New setting “Search subfolders for presets” (to improve retrocompatibility)
  • Added: Banks and Categories lists resizers
  • Added: Rating reset per preset
  • Added: Set Author for all presets
  • Added: Tooltip text to show full name and duration in the waveform monitor
  • Added: Warning message before deleting a preset
  • Added: More IRs to Unusual bank
  • Added: Load Sample option from the Waveform (useful if Drag and Drop doesn’t work)
  • Improved: Loading time for big banks
  • Improved: Import window now remembers the source folder
  • Improved: Importing true stereo files now checks for multiple files
  • Improved: Browser configuration is now saved globally
  • Improved: Top bar preset box now ignores folders with no presets
  • Fixed: Crash when scrolling the browser too quickly
  • Fixed: Potential issue when loading empty impulse responses
  • Fixed: EQ Parameter Lock not working properly
  • Fixed: Sample rate not updated correctly during bouncing in some hosts
  • Fixed: Compatibility with macOS 10.11 and 10.12

2022/07/29: v2.0

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