Yes, I have, both first hand and also involving others in this.
Some of the first experiences I did involving frequency manipulation was the start of my interest in this field and one of the main reasons I became an audio engineer. I would create a piece of music and subject the listener to a specific compound and started noticing actual PHYSICAL effects due to the reception of these frequencies. I found that I could make people extremely anxious to the point of actually sweating while sitting down with their head between two speakers (the sweet spot) Or I could utilize another frequency from the spectrum and induce lethargy to the point of having someone fall asleep right there while sitting up! It was very intense to see different reactions, all being controlled with frequency variations.
#2> The binaural phenomenon is exactly that: a strange phenomenon. THAT is actually what's being studied when I've researched with compounds and what I'm branching onto with these tryptamines. It's finding the 2 separate audible frequencies in "our" range that will create the non-existent frequency that the brain locks onto and then pulses at during the initial blastoff. The tricky part is finding the 2 specific ones, as even 1Hz will make all the difference. Not to mention the fact that there are frequencies we can't currently measure, and the ones that haven't even been cataloged.
#3> I think it's impossible to explain the initial carrier wave. My only theory is that it's introduced in order to sync and acclimate your receptors to receive the broadcast. Obviously the carrier wave is not "actual" as one person who is blasting off hears it, and the observer (if there is one) does not. It's a manifestation that occurs for a specific reason.
I know that in my own experience that frequencies are everywhere and in everything. Tapping in is what's the hardest part, much like taking a trip. It's Russian roulette. It's a crap shoot. You roll the dice and see what you end up with.
We've become accustomed to shutting off a lot of neurotransmitted things that are "out of the norm" as some kind of safety mechanism. Much like our brains tell us "Hey, don't touch that...it's going to hurt you." We set up boundaries and blocks for a lot of things that aren't necessary.
To be totally honest, I sadly don't know of a way that these things to be recorded in real time anymore than thoughts can be read in real time. 
I think the best way to start the mapping of these celestial and other-worldly frequencies is to simply have a subject with some sort of formal music training or basic understanding of notation composition be able to "hum" at exactly the moment it starts so it can be gauged, analyzed, and compared to others. What *MY* frequency is might very well be different from what *YOUR* frequency is.
This is what I'm interested in finding out. You're right, a GREAT deal more research is needed. Not only with this particular compound but with a great deal of others, which I'm also testing as well. It's kind of like giving someone colorblind something like LSD or DMT and listening to them try and explain what Red or Blue looks like. They have no idea what those colors are because they've never seen them.
Maybe, just maybe...I'll be able to successfully produce things that haven't been audibly heard before. A daunting and over ambitious task I know.
But I love a good challenge. 
-Cain