1
$\begingroup$

I have some coefficient values i.e. 74.9, 81.3, and 80.5 at frequency centers 63, 160 and 400 Hz. The values are 1/3 octave band values. I would like to convert them to the 1/1 octave band values. Can someone suggest how to do that?

$\endgroup$
1
$\begingroup$

If I'm understanding your question correctly, you want to sum up levels given as 1/3 octave bands into 1/1 octave band resolution. This can be accomplished by decibel summation:

$L_\Sigma = 10 * log(10^\frac{L1}{10} + 10^\frac{L2}{10} + 10^\frac{L3}{10})$

Where $L$ are levels in dB.

Please see here for an online summation tool.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.