Thank you! Also, because the audrino has a 16 MHZ processor it limits sampling rate. For example if the MHZ was higher it would increase the sampling rate. Furthermore, avr takes 13 conversion cycles, similarity , if the cycles took less steps you can increase the sampling rate. Is that correct?
Moreover, what other limitations does the audrino have in terms of an audio system as I made. For example, some constraints perhaps?