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- Homework Statement
- By what factor is the sound intensity reduced if ear protectors can reduce sound levels by 40dB?
- Relevant Equations
- I can't seem to find any
Would we have to use the 3-dB exchange rate? How would we solve this question?
Start with the definition of dB. What is it?Krystal111 said:Homework Statement:: By what factor is the sound intensity reduced if ear protectors can reduce sound levels by 40dB?
Relevant Equations:: I can't seem to find any
Would we have to use the 3-dB exchange rate? How would we solve this question?
Right. But can you convert that to an equation that gives the sound intensity ratio in terms of the dB difference?Krystal111 said:It expresses the ratio of two values of a power or root-power quantity on a logarithmic scale. Two signals whose levels differ by one decibel have a power ratio of ##10^{1/10 }## or root-power ratio of 10¹⁄²⁰ - as per what wikipedia states