Support HammondWiki. Donate!

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.

The content of this page is Copyright (C) 2000, 2001, 2002 Geoffrey T. Dairiki and the other authors of the content, whoever they may be.
This is free information and you are welcome redistribute it under certain conditions; see for details.
Absolutely no warrantee is made as to the correctness of the information on this page.