I have just started studying Audio Engineering and I have come across a section where I need to add decibel levels together.
I am aware that adding two decibel levels together will always give you the answer of +3dB (e.g, 90dB + 90dB = 93dB)
However, the equation I am using to do this is;
The answer that this gives me is "2,000,000,000"
Is there a step that I am missing here?