oktav

Oktav is a term used in music to denote the interval between two notes where the higher note has twice the frequency of the lower note. This interval is also known as an octave. When a note is played an octave higher, it sounds similar to the original note but with a brighter or more intense quality. The relationship between notes an octave apart is fundamental to Western music theory and forms the basis of scales and chords. The term "octave" itself derives from the Latin word "octavus," meaning "eighth," referring to the eight notes in a diatonic scale from a starting note to its octave. In musical notation, notes an octave apart are often indicated by a small numeral, such as "8va" above the staff to play an octave higher, or "8vb" below the staff to play an octave lower. The concept of the octave is universal across most musical traditions, highlighting a fundamental acoustic phenomenon that humans perceive as a repetition of a musical sound.