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.
and 2 half steps, where the half steps have the maximum separation usually 2 or 3. notes apart. In this paper we will simply consider the major scale, which is one of the diatonic. scales. De nition 1.3. The major scale is a diatonic scale with the pattern of whole step, whole, half, whole, whole, whole, and half. In this paper will also use the notions of interval and triad. Date: AUGUST 21, 2009.