Tone In Ear Signals

[3DMonkey]

I would think reaching indistinguishable means you've found the tone

That is what I first thought was too, but different frequencies resonate closely enough that it is hard to find a match. I was hoping to find a sound source that i could control the freq, up and down, manually. All I have are prerecorded sounds at certain freqs.

That would make it easier..... I wonder if you listened to a prerecorded freq long enough, would the ringing, what's the word, realign?