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Scientific pitch, also known as philosophical pitch, Sauveur pitch or Verdi tuning, is an absolute concert pitch standard which is based on middle C (C 4) being set to 256 Hz rather than ~ 261.63 Hz, [a] making it ~ 31.77 cents lower than the common A440 pitch standard.
Comparison of equal-tempered (black) and Pythagorean (green) intervals showing the relationship between frequency ratio and the intervals' values, in cents. Pythagorean tuning is a system of musical tuning in which the frequency ratios of all intervals are determined by choosing a sequence of fifths [ 2 ] which are " pure " or perfect , with ...
This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1] [2] Every octave is made of twelve steps called semitones.
Concert pitch rose further in the 19th century, evidenced by tuning forks of that era in France. The pipe organ tuning fork in Versailles Chapel from 1795 is 390 Hz, [7] an 1810 Paris Opera tuning fork sounds at A = 423 Hz, an 1822 fork gives A = 432 Hz, and an 1855 fork gives A = 449 Hz. [8]
Scientific pitch notation is often used to specify the range of an instrument. It provides an unambiguous means of identifying a note in terms of textual notation rather than frequency, while at the same time avoiding the transposition conventions that are used in writing the music for instruments such as the clarinet and guitar.
Italian "solfeggio" and English/French "solfège" derive from the names of two of the syllables used: sol and fa.[2] [3]The generic term "solmization", referring to any system of denoting pitches of a musical scale by syllables, including those used in India and Japan as well as solfège, comes from French solmisation, from the Latin solfège syllables sol and mi.
The absolute frequencies for all svaras are variable, and are determined relative to the saptak or octave. E.g. given Sa 240 Hz, Re 270 Hz, Ga 288 Hz, Ma 320 Hz, Pa 360 Hz, Dha 405 Hz, and Ni 432 Hz, then the Sa after the Ni of 432 Hz has a frequency of 480 Hz i.e. double that of the lower octave Sa, and similarly all the other 6 svaras.
When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of C ♯ 4 (the C ♯ above middle C) is about 277.183 Hz. [1] See pitch (music) for a discussion of historical variations in frequency.