Then, what are simple intervals?
A simple interval is an interval spanning at most one octave (see Main intervals above). Intervals spanning more than one octave are called compound intervals, as they can be obtained by adding one or more octaves to a simple interval (see below for details).
Secondly, how do you find the interval in music theory? To find the interval between 2 notes just find the pitch of the lowest note and start counting until you reach the top note. When counting intervals you always start from the bottom note and count both notes. E.g., to find the interval between C and G, begin on C and count up the scale until you reach G.
Beside above, how do you invert compound intervals?
Compound intervals invert to their first octave counterparts. That is, subtract one octave from the original interval. [e.g. Using half-step numbers; Major-ninth is 14°, subtract 12 degrees (14°-12°=2°). 2° is a Major-second.
What intervals are dissonant?
Consonant intervals are usually described as pleasant and agreeable. Dissonant intervals are those that cause tension and desire to be resolved to consonant intervals. These descriptions relate to harmonious intervals. In music theory, consonances are traditionally divided into two groups: perfect and imperfect.