A pipe organ is a musical instrument that
produces sound by driving pressurized air through the
organ pipes selected from a keyboard called a manual. It
is constructed from settled groups of pipes. Each group
is composed of similar pipes with the same tone colour
and loudness but different pitch. Such a group is called a
rank. We have developed two electronic devices for
upgrading the organ. The first device named Controller
of Register Combinations is intended for storing rank
combinations and pipe organ controlling. The second
device named Controller of Tone Keys for pipe organ
allows users to play the organ simultaneously on two
separate keyboards. In this paper, we represent the
purpose, scheme, and our realization of both devices.
The correct functioning of the devices was proved by
integrating them into a church organ. We have already
equipped several church organs with our electronics, and
they all work flawlessly. Feedback from the organists is
excellent, as both Controller of Register Combination
and Controller of Tone Keys make it easier for them to
play. The success so far and the positive responses of the
organists have encouraged us already to plan further
improvements and upgrades of the organ electronics.
Keywords : Pipe Organ, Pipe Organ Electronics, Controller of Rank Combinations, Controller of Tone Keys.