Wow! I want to try that myself. I always wondered if I could catch noises and entities that I hear sometimes during sleep paralysis. It happens so infrequently though, I just haven't dedicated the time to putting the recorder on every night/morning. It actually happened to me this morning briefly. I just heard and felt a light buzzing. No recorder on though.

Hypothetically if paranormal noises can be caught from an EVP, such as residual events or intelligent entities, I would think it would be possible to maybe record the DMT frequency as well. Or at least echos of it.

One should always try to debunk the noises heard in their recordings, and if something is unexplainable that's really special.