Scientific Pitch Notation (Paperback)

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Scientific pitch notation is one of several methods that name the notes of the standard Western chromatic scale by combining a letter-name, accidentals, and a number identifying the pitch's octave. The definition of scientific pitch notation in this article is that proposed to the Acoustical Society of America in 1939, where C0 is in the region of the lowest possible audible frequency. Scientific pitch notation is a logarithmic frequency scale. Although pitch notation is intended to describe audible sounds, it can also be used to specify the frequency of non-audible phenomena. For example, when the Chandra X-ray Observatory observed pressure fronts propagating away from a black hole, the frequency of the waves was reported in the press as the B 57 octaves below middle C, or B 53, corresponding to one oscillation every 10 million years.