These are the sounds that are used, once in your mind reaches an "antennae state" to help ping your consciousness upon the torus:
This is the Monrone Institute's site: https://www.monroeinstitute.org/
They are the ones training in the gateway process.
Here is a more modern study.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5487409/
I find the "binaural" aspect to be unconvincing, in that they suggest have one frequency in one ear and another frequency in the other ear to make up the difference. They do seem to have results in this realm, but the binaural sounds don't have any effect on me.
Plenty of sources on the Internet claim to be within the theta range, but no standard home speakers or headphones are able to produce infrasounds in the range we are interested in: 4 to 7 Hz.
The lowest I could get my own audio devices to got were around 13 Hz, but it is clearly distorted, given the reverberation. Even though it is not audible, you can feel it on my own speakers down to 13. Any lower and the speakers don't seem to produce any kind of results.
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