I'm using the EVAL-ADAU1701MINIZ for my project. I basically want to connect two microphones to the trs input and have the dsp calculate the time delay between them. Based upon the time delay, I want to output sine waves to a tone-decoder circuit, which will control a dc stepper motor. The purpose of this project is to point the two microphones to a source of sound (someone speaking to the microphones).
My questions are:
1) Is there an inexpensive preamp that anyone could recommend to bring the input microphones to line-level?
2) Does anyone know if there are example programs that I could look up that would help me with this project?
I have programmed microcontrollers before, but I am inexperienced with the Analog Devices DSPs.