B. Serrano has released IO – a collection of five free audio effects for Windows.

A unique aspect of the effects is that they all feature sophisticated envelope control. Default time values are in seconds and duration is theorically infinite. So the control envelop can run from nanoseconds to minutes or even hours.

The free audio effect collection includes:

• Paraphonic multifilter
• Stereo Phaser
• Multi level adjuster
• Multi level Auto-Pan
• Ring Modulator

The IO audio effects collection is a free download from the B. Serrano site.

If you give the IO effects a try, let us know what you think of them!