8 ms·

What is "diapason"? I looked it up and the closest definition was "a burst of sound", the rest pertained to pipe organs.

• simne 4y ago
  Band, range.
• nickserv 4y ago
  I'd only seen the word used for musical instruments, where it refers to the scale length and/or the tonal range. Seems like here the same general idea when applied to an engine refers to its operational RPM (frequency) range.