I connected the eartell product and collected data from 5 different microphones, I passed sound from various angles and at various heights and collected the data, I found that the average ITD between the amplifiers in 0.12 and the ITD from end to end microphones is 0.6msec, I converted the analog signal into sound pressure level db using a standard formula now based on the sound source and the sound signal it received my custom program will automatically adjust the ITD and mix it. I still need to add the mixer circuit which will be part of the end product.