batsbrew
well, the ears curve forward, so it is not exactly a 180 degree relationship....
but couldn't a simple screen between the two mics provide the same level of cancellation as the plastic head?
 
the mics that are sunk into the head, surely are not capable of the same frequency response patterns as a mic on a stand?
 

Right, and I said "give or take" meaning not exactly 180.
 
but it's far from 90!

reminds me of a story..
 
i had a guy in the studio once, listening to a mix in action...
 
he was the bass player..
 
and he was standing behind me, and complained about hearing something he described as "phasing"
 
 
i said there was no phasing on anything being played back, to have a sit in the chair, in the sweet spot...
 
he sat there, and moved back and forth, saying "i still hear it"
 
 
i said 'take off your baseball hat'
 
 
and he said "oh"
 

LOL

*Pfft...*  Bass players.