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Perfect Fifth

A diatonic interval of five notes. Its ratio is 2:3, the diapente of the ancients. [A Dictionary of Musical Terms]

The interval between the root and the fifth tone above it.

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Ramsay
If it be asked why no more primes than 2, 3, and 5 are admitted into musical ratios, one reason is that consonances whose vibrations are in ratios whose terms involve 7, 11, 13, etc., would be less simple and harmonious than those whose terms involve the lesser primes only. Another reason is this - as perfect fifths and other intervals resulting from the number 3 make the schism of a comma with perfect thirds and other intervals resulting from the number 5, so intervals resulting from the numbers 7, 11, 13, etc., would make other schisms with both those kinds of intervals. [Scientific Basis and Build of Music, page 75]

See Also


4plusplus
Fifth
Interval
Music
Perfect
Table 11.02 - Fifth is Double Tone
7.14 - Fifth
9.11 - Love or Sympathy is Perfect Continuity
11.13 - Dominant Conditions are Mated Opposing Pairs as Fifths

Created by admin. Last Modification: Thursday November 19, 2020 04:07:27 MST by Dale Pond.