OS4.5 focuses on additional vintage effect emulations and additions to the modulation matrix. The "Vintage Chorus" was modeled after a chorus built in the late 70s. The subset of parameters is designed to allow "morphing" from one emulation to another without having to change the algorithm and therefore stop the sound. It's an addition to the TI's sound engine.
The "Air Chorus
" is based on creating the Chorus effect in the air, in between the speakers. In difference to various other chorus effects, it is designed to work more subtly and open the stereo panorama up in aless intrusive way.
OS4.5 also features a rotary speaker emulation which offers the usual controls such as a fast/slow setting in combination with controls such as microphone distance as well as a crossover setting which allows you to limit the effect to a certain frequency range.
And there are now modulation matrix sources which allow Virus TI users to add further "analog" feeling to any parameter available within the over 100 modulation destinations.
The update can be downloaded free of charge from the Access Music website: www.virus.info