>Looking at just a few of the microphones that I have available:
with RME Quadmic Noise Penalty
> Schoeps Mk2 -36 dBV - 83 =3D -119 dBV -118.6 =
0.4 dB
> Rode NT1A -36 dBV -87 =3D -123 dBV -120.8 =
2.2 dB
> Shure SM81 -45 dBV -78 =3D -123 dBV -120.8 =
2.2 dB
>
> AT3032 -38 dBV
> -86 =3D -124 dBV -121.2 2.8 dB
> Hopefully I haven't made another arithmetic error. These are still prett=
y small differences but they are important to me!
Hi Eric,
As far as I understand, the absolute noise voltage levels of all these micr=
ophones is in the range between about -120 and -117 dBu, which is at least =
9 dB higher than the -129 dBu figure of the RME Quadmic. The increase of th=
e total noise level of the recording system must be calculated from the roo=
t mean square of the two noise voltage components on a linear scale express=
ed in =B5V, not dB. So, the increase of the total noise in conjunction with=
the RME Quadmic should be still less than about 0.4 dB for all these micro=
phones.
Regards,
Raimund
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