Hello! I have to sample audio signal from a microphone (MAX 9814 adafruit) with the nrf52 board. I use the saadc and then I perform a FFT of the data using the sdk 13 examples. My idea is to sample for a very little time (e.g. 10 ms), do the FFT and send data to a raspberry PI, repeating this loop every a certain amount of time.
I need to deploy many microphones to detect noise from different places and I'd like to choose some beacons to use with the microphones. I was interested in this development kit:
www.dynastream.com/d52starterkit
You can find a prototype of my code that contains only the acquisition part with the ADC (I have to add the FFT and sending part) here main.c, and I choose the module above because it has 2 timers on board (32MHz and 32kHz), so it's very useful for my project. Do I have to take care of any other characteristic for the beacon or do you think that this one could be suitable for my task?
Thank you!
