Update FFTTap.swift
Update FFTTap.swift

When we are not normalizing the fftData, we should still be returning values that result in strictly negative amplitudes. After looking into Apple's documentation, it seems that a scaling factor is required. I used 1/n (n = frameCount) for this factor and after performing my amplitude calculations in FFTView they matched the same amplitude values what I was getting from Ableton Live's spectrum analyzer.

audiokit/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,audiokit/AudioKit,adamnemecek/AudioKit,audiokit/AudioKit,adamnemecek/AudioKit,adamnemecek/AudioKit