The Enigma of Absolute Pitch

  title={The Enigma of Absolute Pitch},
  author={Diana Deutsch},
  journal={Acoustics Today},
Figure 1. The pitch class circle. The notes of the traditional Western musical scale are produced by dividing the octave into 12 semitone steps. A semitone is the pitch relation formed by two adjacent notes on a keyboard, and corresponds to a frequency ratio of approximately 18:17. Each of the twelve notes within the octave is assigned a name: C, C#, D; D#, E, F, F#, G, G#, A, A#, and B. The entire scale is generated by repeating this series of note names (or ‘pitch classes’) across octaves… 

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