I'm working on a new project and I'm drawing a blank.In need to input a frequency(2000-15000hz), scale it down(0-2400hz) and add/subtract correction(+ or - 15%) in a somewhat efficient/quick manner.I will use a PIC, but the coding is where I draw a blank.I just need an idea to get me going.It doesn't have to be very accurate, but it has to be quick.Thanks a ton.