Why do third-octave bands have a ratio of cube root of two?

1. Why use 1 3 octave band?
2. How do you calculate 1 3 octave band frequencies?
3. What is a third of an octave?
4. What is a 1 3 octave EQ?

Why use 1 3 octave band?

Mainly used in environmental and noise control applications, 1/3 Octave Bands provide a further in-depth outlook on noise levels across the frequency composition. Each 1/1 (single) Octave is further split into three, providing a more detailed view of noise content.

How do you calculate 1 3 octave band frequencies?

A one-third octave band is defined as a frequency band whose upper band-edge frequency (f2) is the lower band frequency (f1) times the cube root of two.

What is a third of an octave?

A one-third octave is a logarithmic unit of frequency ratio equal to either one third of an octave (1200/3 = 400 cents: major third) or one tenth of a decade (3986.31/10 = 398.631 cents: M3 Play (help·info)).

What is a 1 3 octave EQ?

OK, so now we know what an octave is and what the 10 octaves of human hearing range are. What is 1/3 octave? We… it is simply the same 20Hz – 20kHz range broken into 1/3 octave slices. Calculating 1/3 octave intervals is pretty easy too. You simply start at 20Hz and multiply it by 1.26 to get 25.2Hz.