Differences between current version and predecessor to the previous major change of ComplexToneWheels.

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Newer page: version 5 Last edited on February 14, 2009 10:04 pm. by
Older page: version 1 Last edited on February 27, 2003 5:52 am. by
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-These special tonewheel have a shape , that produces an alternating pulse waveform. So , it has harmonic overtones , that makes them more perceivable . Very prominent is the 3rd and 5th harmonic . 
+In patent 2,508,514, granted 23 May 1950, J. M. Hanert describes a significant revision to the PedalTone generation system. The bottom 12 tonewheels , heard only in the PedalClavier, are modified to produce a more complex waveform than the simple sine wave previously used in this octave . These tonewheels are round cut with two flat sides on opposites sides of the ToneWheel. This shape generates a "complex tone comprising a fundamental (f) and a series of odd harmonics of progressively decreasing amplitude , namely 1/3 (3f) , 1/5 (5f), 1/7 (7f), 1/9 (9f), 1/11 (11f), etc ." The resulting output from each of these first 12 tonewheels is very similar to the shape of a square wave . 

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