a good example is when you're flying the jet and you turn your head. if i look all the way to the left, there is NO sound from the left channel. as a programmer, i do know how you handled this. (or right, matters not)
the greater the degree of turn, the less sound in that channel.
which works a little bit. but when i am at maximum turn, the sound volume is set to zero (or appears to be the case). this is VERY unrealistic. and in a jet, i would ALWAYS hear the jet engines no matter which way i turn my head.
the sound in any 'position' should NEVER be zero no matter if i am walking, riding, or flying. there is ALWAYS sound.
this started with one of your latest updates concerning the 3d sound stuff...about 1 month ago?
a silly example:
degree turned - volume
(0 = straight ahead looking)
0 - 100%
45 - 75%
90 - 50%
180 - 0%