Note: this post is from 2009, outbound links may be broken.
Brainworx releases bx_cleansweep
Brainworx has announced the release of bx_cleansweep, a free effect plug-in for Windows and Mac.
bx_cleansweep is a Hi-Pass filter and a Lo-Pass filter, first order (6dB).
The “specialty” is that the Lo-Pass filter has very accurate “analog style” curves and no nyquist problems because of Brainworx’s new “anti-crush” design.
bx_cleansweep is available as a freeware effect plug-in for Windows PC and Mac OS X (VST/AU/RTAS).
More information: Brainworx