I need too figure out how to take a standard audio jack output and convert it into pluses of varying frequency
within the range of audible human hearing for example input comes in at
1.2 volts its pules at 3,000 hertz
1.3 volts its pules at 3,500 hertz
1.4 volts its pules at 4,000 hertz
1.5 volts its pules at 4,500 hertz
I have very limited knowledge with such things and i need help with this project of mine 
