[LAU] organ stop

[tom haddington]

Hello,List!

This isn't directly a Linux topic, but many users on this list have
experience with pipe organs.  A friend of mine forwarded me this piece:

https://www.youtube.com/watch?v=ii3l44_xD2s

The stop in question, the Vox Humana, can be heard at 1:27.  Apparently,
it's unique.  Can anyone please tell me a little about how this one works?
i hear a very early formant filter and am wondering just how this might be
mechanically accomplished.

Thanks!
Tom
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