I’ve been an EE to one degree or another for 30-ish years now. And one thing I never understood was when a decibel was 10*log_10(x) and when it was 20*log_10(x). My EE books describe it as 20*, but common use has always been 10*. A brief refresher Skip this part if you already know how to use decibels. A decibel… Read More »TIL: Decibels, Power, and Root Power
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