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AcousModules releases Surroundizer v1.0


AcousModules has released Surroundizer v1.0, a VST effect plug-in for Windows that offers stereo to surround translation.

Common features:

  • Activation and free 2D position of up to eight loudspeakers, compatible with all surround settings from 4.0 to 7.1, including true octophony (8.0).
  • Mono or stereo input.
  • Graphic 2D representation space.
  • Connexions according to the ITU/SMPTE standard.
  • Separated levels for each output channel.
  • Variable mix of the three sections plus the reverberation.
  • Individual spatial areas and amplitude curves for each section.

Three spatialization sections: Cinetic, Spectral and "LCRS".

Cinetic section:

  • Analysis of the main frequency (pitch tracker) and the intensity (volume tracker) of the two input channels.
  • Modulation of the X/Y position of the two inputs according to the analyzed signal values.
  • Settings for the default center position, the amplitude of the movement and the smoothness.
  • Each channel tracker can control the X or Y position of the two inputs.
  • Manual mode for use like any surround module and host automations.

Spectral section:

  • Division of the two inputs signals in four frequency bands with three variable crossover filters.
  • Each frequency band can be freely positioned (and automated) inside the 2D space.
  • Levels settings for each band / channel.


  • Simulation of the old Prologic surround sound (5 channels only).


  • Stereo reverberation with spatial position of the two channels and the area expansion.
  • Individual delay and phase settings for the four surround channels (5 to 8).
  • Two parametric filters for the center channel (must be improved).
  • Optional bass management for the fourth channel.
  • Pre-assigned MIDI controllers for easy use with a control surface.
  • 128 patches.
  • Inline help.

Surroundizer is available in free and commercial versions at an introductory price of €15 until March 31st, during which time complete english help, some tutorials and more presets will be added (plus the the final price will be decided). The freeware version is limited to processing only one input.



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