what is harmony and why does it sound good?
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The only analogy I can think of is a well tuned assembly line in a factory. Let’s say a factory is producing a product that needs 4 of part A and 3 of part B to create part C.
The lines making part A and B are running at different speeds (frequencies), but the 4 of A and the 3 of B always arrive at the right time for making one of C.
If the factory were not timed properly, you would have a situation where either A or B would have to be momentarily stopped so one or the other could catch up.
Watching the well timed factory would be satisfying, but watching the ill timed factory would be frustrating.
A similar effect happens when listening to discordant frequencies. There is a constant shifting misalignment in the peaks and valleys of the sound waves. This creates a stuttering, decaying effect in the sound that’s not pleasant to listen to.
But harmonious frequencies sound good because they create an additional wave (product C) that’s steady, smooth, and logically a result of A and B.
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