dmp
Well-known member
I did an experiment with a bunch of mics recently to measure the off axis rejection.
Basically this is a practical experiment for the situation of recording a singer playing acoustic guitar where you want to isolate the guitar and vocals as much as possible by directing the null at the opposite instrument / voice.
Off course this is dependent on the room and looking at the results, you could think that the -17 dB rejection may be the minimum possible due to the room sound.
I used a tuner with an audible tone in front and to the side of each mic (A 440 at 6"). The dB rejection is the difference in the recorded level between the front and side.
I love using the sm7b but clearly it doesn't isolate well!
Ribbon Fig8 -17 dB
SM7b Cardiod -4 dB
Beyer m260 HypCard -13 dB
Re55 Omni -2 dB
Shure 330 SuperCard -11 dB
Beyer m201 HypCard -9 dB
DaleM7 Cardiod -7 dB
Fig8 -17 dB
GrpBuy C12 Cardiod -4 dB
Fig8 -8.5 dB
TimC C12 Cardiod -7 dB
Fig8 -17 dB
BzNz U67 Cardiod -7 dB
Fig8 -13 dB
Basically this is a practical experiment for the situation of recording a singer playing acoustic guitar where you want to isolate the guitar and vocals as much as possible by directing the null at the opposite instrument / voice.
Off course this is dependent on the room and looking at the results, you could think that the -17 dB rejection may be the minimum possible due to the room sound.
I used a tuner with an audible tone in front and to the side of each mic (A 440 at 6"). The dB rejection is the difference in the recorded level between the front and side.
I love using the sm7b but clearly it doesn't isolate well!
Ribbon Fig8 -17 dB
SM7b Cardiod -4 dB
Beyer m260 HypCard -13 dB
Re55 Omni -2 dB
Shure 330 SuperCard -11 dB
Beyer m201 HypCard -9 dB
DaleM7 Cardiod -7 dB
Fig8 -17 dB
GrpBuy C12 Cardiod -4 dB
Fig8 -8.5 dB
TimC C12 Cardiod -7 dB
Fig8 -17 dB
BzNz U67 Cardiod -7 dB
Fig8 -13 dB