[LAD] Gain in dB

[Fred Gleason]

On Oct 15, 2013, at 10:11 05, André Garnier Coutinho wrote:

> GdB = 20log(Out/In) ?

Close.  You actually want:

	GdB = 20*log10(out/in)

You probably knew this already as standard mathematical notation assumes log == 'log to the base of 10'.  However, the log() function in the math library will get you natural logarithms ('log to the base of e').  You want log10().  Been there, done that confusion myself…  :)

Cheers!


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