Neutral second: Difference between revisions

A '''neutral second (n2)''' is an interval that spans one step of the [[5L 2s|diatonic]] scale with a quality between major and minor. It exists in [[neutralization|neutralized]] diatonic scales as exactly one half of a [[minor third]].

In [[just intonation]], an interval may be classified as a neutral second if it is reasonably mapped to [[7edo|1\7]] and [[24edo|3\24]] (precisely one step of the diatonic scale and one and a half steps of the chromatic scale).

As a concrete [[interval region]], it is typically near 150{{cent}} in size, distinct from the [[Semitone (interval region)|semitone]] of roughly 100{{c}} and the [[major second]] of roughly 200{{c}}. A rough tuning range for the neutral second is 130 to 170{{c}} according to [[Margo Schulter]]'s theory of interval regions. This page will consider intervals between about 120 and 170{{c}}. The outer range of this might be too extreme to call "neutral seconds", but this is done so that one can find what they're looking for easily.