Nominal-accidental chain: Difference between revisions
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: ''"Sharp" and "flat" redirect here. For the temperaments, see [[Sharp (temperament)]] and [[Flat (temperament)]].'' | : ''"Sharp" and "flat" redirect here. For the temperaments, see [[Sharp (temperament)]] and [[Flat (temperament)]].'' | ||
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'''Accidentals''' are additional pitches that arise as modifications of the nominals. Unmodified pitches are natural notes. In diatonic [[circle-of-fifths notation]], the additional pitches are denoted by adding '''sharps''' or '''flats''' to the natural notes. The sharp accidental denotes a pitch raise by a [[chromatic semitone]], equivalent to a raise by 7 fifths minus 4 octaves. Conversely, the flat accidental denotes a pitch drop by the same amount. In [[equal temperament]]s, the number of steps this interval is mapped to is called the [[sharpness]]. | '''Accidentals''' are additional pitches that arise as modifications of the nominals. Unmodified pitches are natural notes. In diatonic [[circle-of-fifths notation]], the additional pitches are denoted by adding '''sharps''' or '''flats''' to the natural notes. The sharp accidental denotes a pitch raise by a [[chromatic semitone]], equivalent to a raise by 7 fifths minus 4 octaves. Conversely, the flat accidental denotes a pitch drop by the same amount. In [[equal temperament]]s, the number of steps this interval is mapped to is called the [[sharpness]]. | ||
{{Wikipedia| Accidental (music) }} | |||
These pitches form a chain, with each one separated from the next by a specific interval. This interval can be said to generate the notation, or the notation can be said to be based on this interval. In diatonic circle-of-fifths notation, this interval has been a just or near-just 3/2. Other intervals are possible, and even desirable for certain edos like 13, 18 and 23. | These pitches form a chain, with each one separated from the next by a specific interval. This interval can be said to generate the notation, or the notation can be said to be based on this interval. In diatonic circle-of-fifths notation, this interval has been a just or near-just 3/2. Other intervals are possible, and even desirable for certain edos like 13, 18 and 23. | ||