H
hh
Guest
If you have two system, one SN is a, another is b. If they are summed, what is SN?
Assuming they can be summed for same properties.
Hui
Assuming they can be summed for same properties.
Hui
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J
Joe McElvenney
Guest
Hi,
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
In the case of two uncorrelated noise sources mixed withIf you have two system, one SN is a, another is b. If they are summed, what is SN?
Assuming they can be summed for same properties.
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
J
Joe McElvenney
Guest
Hi,
Oops! the last sentence should read -
That is, uncorrelated noise powers add normally but
their voltages do not.
Cheers - Joe
Oops! the last sentence should read -
That is, uncorrelated noise powers add normally but
their voltages do not.
Cheers - Joe