Equal Temperament Scale

Equal Temperament Scale is a form of Technology and Culture.

Description
Musical notes sound the most pleasant when the frequency of each is some fixed multiple of the one below it. If a note is double the frequency of another, they are separated by one octave. Practical music requires the octave to be divided into a number of semitones, twelve being the most common, with the frequency of each note being a fixed ratio to the one below. This has long been recognized, but tuning instruments to this scheme has always involved much trial and error. Now there is a firm