Summary: [Nature Recordists] Re: EIN values and bits and peaks

["Raimund" animalsounds]

> Could the variability in sensitivity between Telinga SSM microphones be a=
 factor?
>
> Variably between stock EM172 capsules sensitivity(+ or - 3dB) would certa=
inly exhibit noticeable differences in the range of recorder EIN we are tal=
king about.
> Also, could stated em172 variability in impedance (+ or - 30%)play any ro=
le in noise differences between different setups? I don't know anything abo=
ut that.
>
> EM172 spec sheet:
> http://www.frogloggers.com/Documents/EM172.pdf?cat=3D13&en=3D1

That's for sure, John.

The data sheet unfortunately does not say anything about the tolerances of =
the S/N ratio or noise floor, but I guess that this will also vary signific=
antly between the individual capsules.

Any electronic component has generally such individual variations. In most =
cases these are small and can be neglected. A variation of +- 3 dB is howev=
er indeed something that could explain the observations.

Regards,
Raimund