Re: Amplitude Decibel conversion problem

clay@[EMAIL PROTECTED]
 wrote:

   ...

> As I alluded to earlier 100 dB SPL being 0.946 watts per square meter
> is the resulting experimental value that corresponds to 0 dB being the
> threshold of human detection. So if I say a sound has a level of
> 100dB, I'm not talking about a signal in a wire or such. I'm talking
> about the strength of the acoustic vibrations in the atmosphere at
> STP. The reason I bring this up is this is the case where we don't
> need to use a reference since sound is perceptual and therefore the
> reference is humans.

With regret, no. the reference is the sound power level at which 50$ og 
the test subjects become aware of the sound. Your 100 dB is still a 
ratio: 10^10 times the reference.

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