Intervals - By guitarelements
The sounding together of two tones creates a blending of the two into a new, specific sound, is called the interval.
Within the sound of each interval, partial tones can be perceived, emerging from the interaction of frequencies as sum and difference tones.
Each interval thus consists of far more than just the two tones played or performed, it is a complex sound which is at first perceived as a whole.
Due to notation, intervals are named by the distance between the two basic tonesthey consist of.
When the lowest tone is counted as 1, the name of the interval follows from counting in diatonic steps upwards (although reversing this direction gives the same result).
Wider than the octave, music theory describes larger intervals. Though similar, some of these sound quite different than their related narrower intervals.
Full name of the Intervals.
A full name of an interval consists of the name plus the nature, such as minor second (m2), perfect fifth (P5), or augmented sixth (A6) etc.
Each interval thus has a "first" and a "last name".
For shorter and easier writing the names of the intervals are abbreviated in the following way: the intervals are represented by numbers, their nature by a preceding letter.
Summary of the abbreviations:
M = Major, m = minor, P = Perfect, A = Augmented, d = diminished,
1 = unison, 2 = second, 3 = third, 4 = fourth, 5 = fifth, 6 = sixth, 7 = seventh, 8 = octave
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