Tables of prototype elements with losses of some chord sounds, with the synthesis of polyphonic circuits of a musical image

the article reveals a chord consisting of 3 sounds arranged in thirds. The sounds that make up a triad have their own names: the lower sound is prima or base, the middle is third or end sound, the upper is fifth or fifth sound. If the sounds of a triad are arranged in thirds, this is the main type of triad. A seventh chord is a chord consisting of four sounds that are or can be arranged in thirds. The interval between the two extreme sounds of a seventh chord is equal to a seventh, hence its name. When treating chords, composers did not specifically use thirds or fifths in order to diversify their music.