Symmetrical Castle & Liquidclear have released Swell, a freeware VST effect plug-in for Windows PC.

Swell is a simple audio-triggered automatic envelope (ADS) designed for use with electric guitars.

Swell features

• Power - Turns Swell on/off (bypass).
• Threshold - Ajdusts the sensitivity of gate that triggers thee envelope.
• Envelope - Attack, Decay, Sustain.
• Mono - If switched on, left and right inputs will be summed.
• Volume - Level of Swell’s output.

Visit Liquidclear for more information and a link to download Swell.