diapazon

Diapazon, sometimes transliterated as diapason in English, is a term used in several languages to denote range or spectrum. In English, the closely related word diapason is used in organ terminology, while the form diapazon is common in Russian, Ukrainian, Uzbek, and other languages to mean a range or interval.

In music, diapazon refers to the complete set of pitches that a voice or instrument can produce, or to the practical range used in performance. In organ terminology, diapason (the diapason stops) denotes a family of stops that produce a principal, core timbre; these stops are central to the organ’s characteristic sound.

In acoustics and audio technology, diapazon describes the frequency range that a device can reproduce or that a sound occupies. Specifications typically report the diapazon as a low-to-high frequency span, such as 20 Hz to 20 kHz for human hearing.

General usage across languages such as Russian, Ukrainian, and Uzbek employs diapazon to denote range or spectrum in science, technology, and everyday language. The concept also appears in data analysis and signal processing to denote a numerical interval, from a minimum to a maximum value.