In initial tests using a spectrum analyzer I was able to differentiate between several different sound occurrences based upon the spectrum of each of those components. I was considering the way that the chip I am using captures the audio. It occurs in such a way that it uses a round robin approach in order to scan the spectrum, each a few ns apart. This might be useful when trying to capture words directly as well as other sounds as in a word, there is definitely a progression of different tones that go together to create a recognizable phonetic.