Basics of Pneumatic Logic

Re:Basics of Pneumatic Logic by Animats on Monday June 15, 2020 @09:17PM (#23534972)

Yes, some pipe organs had enormous switching systems. They didn't do all that much; they just switched the keyboard to pipe rank connections. Physically, they were huge, like multiple upright pianos. Some needed compressed air for power; others were entirely electrical.

They had no direct function in producing sound. All this was separate from the actuators for the pipes.

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Re:Basics of Pneumatic Logic by emersonrsantos on Monday June 15, 2020 @10:21PM (#23535360)

Exactly, what produced the sound was pipes (and is, in a non-electrical or electronic organ) using the same air that feed the pipes by the bellows.

It replaced mechanical track action, keyboard coupling, register switching and even had memory to ‘remember’ a register presets or register sets.

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