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  2. Enharmonic scale - Wikipedia

    en.wikipedia.org/wiki/Enharmonic_scale

    The ancient Greek meaning of enharmonic is that the scale contains at least one very narrow interval. (The spacing of each pair notes between their bracketing fixed notes is usually either approximately or exactly the same, so when there is one narrow interval in one bracket there is almost always another one inside the other bracket.) [4] Modern musical vocabulary has re-used the word ...

  3. Enharmonic equivalence - Wikipedia

    en.wikipedia.org/wiki/Enharmonic_equivalence

    A musical passage notated as flats. The same passage notated as sharps, requiring fewer canceling natural signs. Sets of notes that involve pitch relationships — scales, key signatures, or intervals, [1] for example — can also be referred to as enharmonic (e.g., the keys of C ♯ major and D ♭ major contain identical pitches and are therefore enharmonic).

  4. 22 equal temperament - Wikipedia

    en.wikipedia.org/wiki/22_equal_temperament

    In music, 22 equal temperament, called 22-TET, 22-EDO, or 22-ET, is the tempered scale derived by dividing the octave into 22 equal steps (equal frequency ratios). Play ⓘ Each step represents a frequency ratio of 22 √ 2, or 54.55 cents (Play ⓘ). When composing with 22-ET, one needs to take into account a variety of considerations.

  5. Quarter tone - Wikipedia

    en.wikipedia.org/wiki/Quarter_tone

    In the quarter-tone scale, also called 24-tone equal temperament (24-TET), the quarter tone is 50 cents, or a frequency ratio of 24 √ 2 or approximately 1.0293, and divides the octave into 24 equal steps (equal temperament). In this scale the quarter tone is the smallest step.

  6. Neo-Riemannian theory - Wikipedia

    en.wikipedia.org/wiki/Neo-Riemannian_theory

    Edge-adjacent triads share two common pitches, and so the principal transformations are expressed as minimal motion of the Tonnetz. Unlike the historical theorist for which it is named, neo-Riemannian theory typically assumes enharmonic equivalence (G ♯ = A ♭), which wraps the planar graph into a torus.

  7. Pythagorean comma - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_comma

    Disregarding this difference leads to enharmonic change ^ The 7 ♭ and 5 ♯ , respectively 5 ♭ and 7 ♯ scales differ in the same way by one Pythagorean comma. Scales with seven accidentals are seldom used, [ 5 ] because the enharmonic scales with five accidentals are treated as equivalent.

  8. Eysenck Personality Questionnaire - Wikipedia

    en.wikipedia.org/wiki/Eysenck_Personality...

    In psychology, the Eysenck Personality Questionnaire (EPQ) is a questionnaire to assess the personality traits of a person. It was devised by psychologists Hans Jürgen Eysenck and Sybil B. G. Eysenck. [1] Hans Eysenck's theory is based primarily on physiology and genetics. Although he was a behaviorist who considered learned habits of great ...

  9. PAD emotional state model - Wikipedia

    en.wikipedia.org/wiki/PAD_emotional_state_model

    The PAD emotional state model is a psychological model developed by Albert Mehrabian and James A. Russell (1974 and after) to describe and measure emotional states.PAD uses three numerical dimensions, Pleasure, Arousal and Dominance to represent all emotions.