3 ms·
AC line frequency has been recognized as a preferred reference for pitch. This is what made Hammond electric clocks the first reliable AC powered timekeepers.
by fuzzfactor 10y ago
AC line frequency has been recognized as a preferred reference for pitch. This is what made Hammond electric clocks the first reliable AC powered timekeepers.
Later, Hammond famously produced electro-mechanical organs referenced to line frequency.
Well, what do you expect from somebody simply following in the creative footsteps of Leonardo DaVinci & Thos. Edison?
- gugagore 10y agoInteresting. I don't think it's a particularly stable reference in the short term. It's true that the power companies adjust it to hit exactly the nominal frequency over a period of many hours, but not at any one instant. In fact: https://en.wikipedia.org/wiki/Utility_frequency#Time_error_correction_.28TEC.29 https://en.wikipedia.org/wiki/Utility_frequency#Time_error_c...