Re: Amplitude Decibel conversion problem

clay@[EMAIL PROTECTED]
 wrote:
> On Oct 8, 5:35 pm, c...@[EMAIL PROTECTED]
 wrote:

   ...

> For SPL measurements, we may write
> 
> dB = 10*log(Intensity/Intensity_reference)
> 
> from the intensity to pressure relation, we then find
> 
> dB = 20*log(pressure/pressure_reference)
> 
> where the common but not universal references being:
> 
> pressure: 20 micropascals
> 
> intensity: 1 picowatt/meter^2
> 
> 
> I hope this clarifies any issues I created.

We're all -- at least those of us who know what a decibel is -- better 
off now than we were before.

Jerry
-- 
Engineering is the art of making what you want from things you can get.
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