Matthieu Brucher has released ATKAutoSwell, a free autoswell effect plugin for Windows and Mac.

Matthieu Bruchner AtkAutoSwell

I’m happy to announce the release of a mono autoswell based on the Audio Toolkit. They are available on Windows and OS X (min. 10.8) in different formats.

This plugin applies a ratio to the global gain of a signal once it is higher than a given threshold. This means that contrary to a compressor where the power of the signal will never go lower than the threshold, for AutoSwell, it can.

ATKAutoSwell is a free download (VST/AU).

More information: Matthieu Brucher / ATKAutoSwell