[posterboy]

I was conceeding to make sure I understood them correctly.

The problem is, if you have only two tones, the lower one is essentially the base frequency in my address. But I'm assuming you have somewhat of a natural buzz, or resonant frequencies from the environment that command the base frequency for you, so you can't take any two intervals and compare them as if they were relatively same. This should be relevant especially if you play them one after another to compare, no?