Direction of Arrival Demo Not working

Previously, for 16 KHz sampling rate, the delay and sum beam-forming based direction of arrival used to give reasonable result. Now it is all over the place and all the LEDS are blinking all the time. What is the reason behind this ?

Are you using the MATRIX Voice or the Creator?

Anyone check pls. about the Matrix Voice
Different angle and mic.

namespace hal = matrix_hal;
int led_offset[] = {4, 0, 2, 5, 7, 10, 13, 15}; //org(MatrixCreator) {23, 27, 32, 1, 6, 10, 14, 19}
int lut[] = {1, 2, 10, 200, 10, 2, 1};

Results.
Azimutal Angle = 123.217, Polar Angle = 0, Mic = 2
Azimutal Angle = -82.4983, Polar Angle = 0, Mic = 6
Azimutal Angle = 123.217, Polar Angle = 0, Mic = 2
Azimutal Angle = -82.4983, Polar Angle = 0, Mic = 6
Azimutal Angle = 123.217, Polar Angle = 0, Mic = 2