state weber-fechner's law relating intensity and loudness of soud.

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Weber - Fetcher's law states that - the magnitude of any sensation i.e loudness is proportional to the logarithm of the physical stimulus which produces it.
$A c c o r d i n g t o t h i s l a w, r e l a t i o n s h i p b e t w e e n I n t e n s i t y l e v e l a n d i n t e n s i t y i s g i v e n a s, b = 10 \log (\frac{I}{I_{0}}) d B w h e r e b i s i n t e n s i t y l e v e l I_{0} i s t h r e s h o l d o f h e a r i n g I i s i n t e n s i t y .$

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