mini project help

hey i am an electronic engineer and I am planning to make an electronic stethoscope with some modifications for my mini project in 6th sem......i need some help .............😕😕😕...................the modifications i meant to do are 1.record the output pulses.
2.a counter circuit to count the output for 1 minute..............

if any one can help me please reply me to my e mail id :-<removed>....😕😕😕.......