sum of signal noise ratio?

Hi,

SN?

In the case of two uncorrelated noise sources mixed with identical signals of the same amplitude, I think there should be a 3dB improvement in S/N ratio. The voltage resulting from two such noise signals would be equal to the square-root of their sum but the signals alone would add normally. That is, uncorrelated noise powers add normally but the sum of their voltages do not.

Cheers - Joe

Hi,

Oops! the last sentence should read - That is, uncorrelated noise powers add normally but their voltages do not. Cheers - Joe