Re: LS-10 plus DPA 4060

["Robin" escalation746]

Rob Danielson wrote:

> The noise ratings and computations, like those on 
> the Rane Table 3, http://rane.com/note148.html rarely 
> match real world noise performance.

One reason for that would be the differing frequency response of the noise. 
Another would be differences in the measurement of the figures we pop into the 
chart. No manufacturer ever says much about the bandwidth over which their SPL 
calculations were made, for example. 

It would be very easy for variations from manufacturer specs to change the 
look-up EIN results by a few dB. And, as you say, we can distinguish well under 
a dB. So the variation we get is way over any reasonable JND.

(That's why I value Raimund's work and others who provide a consistent 
measurement environment.)

-- robin