I calculate phase diffrence in 800 Hz and then convert it to time_delay, when calculate angle and direction by it ,but it is not correcte. When mics against to speaker it show 80 degree and when base mics rotate to the left , the angle decrase to 60 deg but when rotate to right it decrse until 78 degree,i think it have some problem.
I substract 0.00004 us but angle is not true yet
Do you know what is problem?