Aritmetikus

Aritmetikus is a term used in music theory to describe a specific type of melodic or harmonic progression. It refers to a sequence where the intervals between successive notes are all the same. This creates a sense of steady, predictable movement. In a melodic context, an aritmetikus progression would feature a series of notes that ascend or descend by a constant interval, such as a major second or a perfect fifth. For example, C-D-E-F would be an aritmetikus melodic progression in major seconds. Similarly, a harmonic progression could be aritmetikus if the chords move by the same harmonic interval.

The concept is closely related to the idea of sequences in music, which are repetitions of a melodic or harmonic pattern at different pitch levels. However, an aritmetikus progression is a specific type of sequence where the interval of transposition remains constant. This consistent interval gives the progression a distinctive character, often described as smooth, logical, or even mechanical. While not as common as other melodic or harmonic devices, aritmetikus progressions can be found in various musical styles and periods, often used to create a sense of building tension or to provide a clear structural element within a composition. The term itself derives from the Greek word "arithmos," meaning number, highlighting the mathematical and orderly nature of these progressions.