How do you correlate the SPL with db


I bought a digital equalizer, Behringer DEQ2496, for my system. One of the function in this unit is the RTA. I tried this function, but the scale is in SPL. When I try to compensate the RTA result with the graphic equalizer, I realized that the scale of the eq. is in db. My question is that how do you convert SPL so that I will know at which point that it equals to 0db on the eq. scale. In another word, how do I know at what SPL equals to 0db on the eq. scale. I hope you can understand what I am trying to convey.
Thanks,
fallot

Showing 1 response by shadorne

SPL is a unit of measure - Sound Pressure Level

db is a particular practical logarithmic scale for plotting SPL's named in honor of Alex Graham Bell - decibel

SPL db = 20 Log (Measured Sound Pressure / Ref Sound Pressure)

For your purposes it is the same thing...