For example, in a woman with a 21-day cycle, the follicular phase is likely seven days; in a woman with a 35-day cycle, the follicular phase is likely twenty-one days. (Note: It is possible for a luteal phase defect to shorten the length of the menstrual cycle â this will be discussed in a future article on Phase II.
The diatonic scales. The diatonic scale is most familiar as the major scale or the natural minor scale (or aeolian mode). The diatonic scale is a very important scale. Out of all the possible seven note scales it has the highest number of consonant intervals, and the greatest number of major and minor triads.he diatonic scale is a very important scale. Out of all the possible seven note scales it has the highest number of consonant intervals, and the greatest number of major and minor triads.
The formula to construct a diatonic scale is as follows: whole step, whole-step, half-step, whole-step, whole-step, whole-step, half-step. Each fret on the guitar equals a half-step. Therefore, 2 frets on the guitar equals a whole-step. The diatonic scale is built from the chromatic scale. The chromatic scale is simply the root(1st) tone followed by each half-step tone ascending consecutively until arriving at the root(1st) tone one octave higher in pitch. Example 1: