Differences between version 4 and predecessor to the previous major change of GearRatio.

Other diffs: Previous Revision, Previous Author

Newer page: version 4 Last edited on November 25, 2013 9:53 pm. by
Older page: version 3 Last edited on April 1, 2006 10:28 pm. by
@@ -15,9 +15,9 @@
 A# 67 46 1.456521739 
 B 108 70 1.542857143 
 </verbatim> 
  
-Note that these ratios produce an very close *approximation* of the equal tempered scale. They are *NOT* exact. These ratios are used in each of the first seven octaves. The octave produced is dependant on the number of teeth on the ToneWheel''''s. In 60Hz organs, the motor turns at 1200 RPM / 60Hz or 20 revolutions per second. The lowest octave has tonewheels with 2 teeth. The first 7 tones in the highest octave (C through F#) are produced by tonewheels with 192 teeth. For these 7 tones to be correct with only 192 teeth, they use the gear ratios for notes F through B. 
+Note that these ratios produce a very close *approximation* of the equal tempered scale. They are *NOT* exact. These ratios are used in each of the first seven octaves. The octave produced is dependant on the number of teeth on the ToneWheel''''s. In 60Hz organs, the motor turns at 1200 RPM / 60Hz or 20 revolutions per second. The lowest octave has tonewheels with 2 teeth. The first 7 tones in the highest octave (C through F#) are produced by tonewheels with 192 teeth. For these 7 tones to be correct with only 192 teeth, they use the gear ratios for notes F through B. 
  
 The formula to calculate the exact frequency produced is: 
  
 <verbatim> 

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