Chromatic vs diatonic4/11/2023 ![]() ![]() In a diatonic labeling system, every interval has a size and a quality.įor example, in a minor second, labeled m2, the m indicates the quality of the interval and the 2 indicates the size of the interval. ( G to D-flat is strongly associated with the key of A-flat major/minor, whereas C-sharp to G likely implies D major/minor.) The context of these two intervals is critical in determining their function in tonal harmony, so we must use a system that differentiates between the two. Both even use the same pitch-classes, however, any person familiar with diatonic harmony will immediately associate these two intervals with different key centers. For example, the interval of G to D-flat has six half-steps which is identical to the interval from G to C-sharp. Instead, counting half-steps creates interval-classes in which intervals are considered equal regardless of the pitches. While easily understandable, this method does not relate to our concept of tonality. The simplest way to measure the distance between two intervals would be to measure the distance by the shortest possible interval–in this case, a half-step (minor second). Our goal when measuring intervals is intrinsically tied to the tonal system that we use, diatonic harmony. Chromatic intervals in the examples below.Perfect 15th and major 10th from the compound intervals.Diatonic intervals in the examples below.Qualities: P = perfect, M = major, m = minor, A = augmented, d = diminished.how the size and quality change when the upper and lower pitches of an interval are inverted.simple versus compound intervals and how this affects classifying of quality and size.which sizes can use which qualities as well as the hierarchy of qualities for each size.the quality of the interval as represented by the labels perfect, major, minor, diminshed, and augmented.the size of the interval between two pitches as represented by a numeral.Using these, develop a simple explanation for how we find each of the following: In the example below, each interval represents the concept stated at the beginning of its staff, but each measure also has an important relationship to the measures above and below it. At their simplest, intervals need only measure the distance between two pitches, but there are many variables in music for which we must account. ![]() Intervals are the fundamental building blocks of melody and harmony. ![]() IntervalsĪny two-note combination is called a dyad, and the distance between the two pitches of a dyad is an interval. Now that we have formalized our notation of the most basic level of music notation, a single pitch, we must find a method to measure the distance between two pitches. Lesson 2a - Identifying and Labeling Intervals ![]()
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