Prague Baroque - bellows

6 wedge bellows were designed to provide sufficient air for the full organ. These bellows are driven by "invisible" virtual calcants. The momentaneous wind pressure inside the bellow is displayed right to it. Below, the pressure inside the windchest is shown. In the right bottom corner, there are two switches: the first one can be used to switch off/on the air supply and thus making the organ silent. THe second one can disable/enable the valves on the bellows output, changing the behavior of the wind model. The Exhaust valve can be opened or closed as desired to let the wind out of the bellows, producing greater/lesser wind sag to the whole organ.