Howtosignalprocessing
What is octave band frequency?
An octave band is a frequency band where the highest frequency is twice the lowest frequency. For example, an octave filter with a centre frequency of 1kHz has a lower frequency of 707Hz and an upper frequency of 1.414kHz. Any frequencies below and above these limits are rejected.
How do you calculate octave bands?
In a general manner the middle frequencies of an n-th octave bands are obtained by successive multiplication or division of 1 000 Hz with 2^1/n. The lower and upper frequnecy bounds of a given n-th octave bands with middle frequency f_0 are given by f_0/(2^1/2)^1/n and f_0\times(2^1/2)^1/n respectively.
What is a 1 1 octave band?
1/1 Octave Band measurements are used when the frequency composition of a sound field is needed to be determined. Octave analysis is often used in noise control, hearing protection and sometimes in environmental noise issues.
