mic volume not necessarily be low frequency voice its soft voice typically spread with widerange. and various different level. it might happen strenght in opn for mic reduction is less/and amplified due to your loss. oticon strategy is not to touch generally important speech spectra while appliying NR algorithm and wind reduction etc might be that effect first to delete everything from genie and HA then enter a fresh andtry to re adjust receivers by audi. in my case its due to audi increased gain more than 40 db to check effect and then every time speech come will be shhhhhhiii and sent to company they reseted my HA and readjusted receiver that audi opened and changed then worked fine… no issue now though if mic noise fall in your amplifying area you will hear it. slightly but it wont disturb you much. second option run feedback analyse and which frequency succeptible reduce it bit more. its just trial and error method can solve it.
I did turn Soft Voice setting down to minimum and although that reduce the volume level for soft sounds, the static noise remains just the same, so I know it’s not due to soft sound setting.
This static/noisy mic in Full Directional is not really a problem I need to solve, because I never have any desire to use Full Directional in any one of my programs anyway. It was just a curiosity more than anything as to why there’s noise in that mode in the first place.