Sinevibes announces the release of Reactive, its new AudioUnit effect plugin for Mac OS X that turns any sound into melodic material.

Reactive detects the input signal's dynamic envelope, and converts it into pitch information via an eight-note keyboard matrix. The pitch and envelope are then simultaneously used to drive three distinct synthesizer engines featuring waveshape modeling, phase modulation, and subtractive with ring modulation. All this is easily accessible via a simple color-coded interface, and lets Reactive instantly create unique new sounds – from synth and bass lines, pulsating drones, and stepped pitch glides, to glitches, blips, wobbles, and noises – which are all lively reacting to the input.

What can it do?

• Use any sound's dynamics to generate melodies, strums and arpeggios.
• Transform rhythm and percussion parts into synth and bass lines.
• Create unique instruments and effects in realtime out of vocal beat-boxing or even simple microphone tapping.

Reactive is available as a 32/64-bit AudioUnit plugin for OS X 10.5 or later, and costs $29.