Quarter tones

Neutral interval

In music theory, a neutral interval is an interval that is neither a major nor minor, but instead in between. For example, in equal temperament, a major third is 400 cents, a minor third is 300 cents, and a neutral third is 350 cents. A neutral interval inverts to a neutral interval. For example, the inverse of a neutral third is a neutral sixth. Roughly, neutral intervals are a quarter tone sharp from minor intervals and a quarter tone flat from major intervals. In just intonation, as well as in tunings such as 31-ET, 41-ET, or 72-ET, which more closely approximate just intonation, the intervals are closer together. * * Neutral third * Neutral sixth * (Wikipedia).

Neutral interval
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From playlist Calculus

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From playlist Applications of Differentiation – Relative Extrema

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From playlist Using Interval Notation

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From playlist Differentiation Application - Absolute Extrema

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From playlist Using Interval Notation

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From playlist Reinforcement Learning Course: Tutorials (Summer 2020)

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From playlist Calculus II

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Related pages

Frequency | 17 equal temperament | Arab tone system | Cent (music) | Neutral third | 72 equal temperament | Quarter tone | 41 equal temperament | Eleventh harmonic | Perfect fifth | Equal temperament | Neutral sixth | 31 equal temperament | 22 equal temperament | Major fourth and minor fifth