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MMD > Archives > October 2004 > 2004.10.26 > 03Prev  Next


Data Compression in Mechanical Music Media
By Todd Augsburger

Art,  Your description of the Imhof & Mukle orchestrion barrel rotation
speed is indeed fascinating; I had no idea it could be controlled in
that manner.  I'd think it would be difficult to regulate the slower
speed by simply increasing friction.  Is there a significant transition
time as the air-brakes speed up and slow down?

I assume there's some way to regulate the slower speed -- any idea what
percentage the slow speed is in comparison to the fast?  Certainly an
interesting way to get the most out of a barrel, and without complicating
its basic drive method!

Thanks,
Todd Augsburger - Roller Organs
http://www.rollerorgans.com/

 [ Art says brake pads are pressed against friction wheels on each
 [ of the two air-brake fan shafts.  This seems similar to the speed
 [ control of a phonograph spring-motor.  The fans will continue to
 [ provide modest speed regulation.  -- Robbie


(Message sent Wed 27 Oct 2004, 02:44:43 GMT, from time zone GMT-0400.)

Key Words in Subject:  Compression, Data, Mechanical, Media, Music

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