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B Flat notes. B ♭ (B-flat), or, in some European countries, B, is the eleventh step of the Western chromatic scale (starting from C).It lies a diatonic semitone above A and a chromatic semitone below B, [1] thus being enharmonic to A ♯, even though in some musical tunings, B ♭ will have a different sounding pitch than A ♯.
For example, a written C on a B ♭ clarinet or trumpet sounds as a non-transposing instrument's B ♭. The term "concert pitch" is used to refer to the pitch on a non-transposing instrument, to distinguish it from the transposing instrument's written note. The clarinet or trumpet's written C is thus referred to as "concert B ♭ ". [1]
The frequency of a pitch is derived by multiplying (ascending) or dividing (descending) the frequency of the previous pitch by the twelfth root of two (approximately 1.059463). [ 1 ] [ 2 ] For example, to get the frequency one semitone up from A 4 (A ♯ 4 ), multiply 440 Hz by the twelfth root of two.
B, also known as Si, Ti, or, in some European countries, H, [1] is the seventh note and the twelfth semitone of the fixed-Do solfège. Its enharmonic equivalents are C ♭ (C-flat) and A (A-double sharp). When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle B (B 4) is 493.883 Hz. [2]
Occasionally, music written in German for international use will use H for B natural and B b for B flat (with a modern-script lower-case b, instead of a flat sign, ♭). [ citation needed ] Since a Bes or B ♭ in Northern Europe (notated B in modern convention) is both rare and unorthodox (more likely to be expressed as Heses), it is generally ...
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For standard A440 pitch equal temperament, the system begins at a frequency of 16.35160 Hz, which is assigned the value C 0. The octave 0 of the scientific pitch notation is traditionally called the sub-contra octave , and the tone marked C 0 in SPN is written as ,,C or C,, or CCC in traditional systems, such as Helmholtz notation .
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