Lang,
Yes, the overall self-noise floor of the microphones itself will also drop
by 3dB if the two channels are mixed together. So, you could even use more
microphones to increase that effect. Though, the effect would be relatively
small (each doubling of the microphone count would provide a 3 dB noise dro=
p
only). Unfortunately, mixing several microphone signals together might also=
lead
to unwanted phase cancelations in the sounds you want to record.
Raimund
> Raimund:
>
> Thank you for confirming what I expected. The key is that the noise picke=
d
> up by each of the two mikes is "uncorrelated", hence the phase
> cancellations
> and a 3 db drop when they are mixed together. Same applies, I suppose, to
> the noise floor of the mikes themselves, which would be audible on very
> still morning if the gain is pushed high.
>
> This is comforting news for those wanting to do high quality stereo
> parabolic recordings.
>
> Lang
>
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