Out of my four ayahuasca trips this month (these were also some of my first psychedelic experiences) I have observed the same constant, resonant, omnipresent buzzing. It always occurs on the onset of psychedelic effects and remains there, getting louder and maybe modulating occasionally as it peaks and then quieter as it comes down in an almost perfect bell-curve. It sounds something like flies buzzing crossed with a weed whacker, like motorized insects almost. It does have an organic sound though. Due to the consistency of it (it's always the same on every trip and is the most constant variable in the entire experience for me) I have to theorize that it may actually always be there, and DMT might alter the auditory part of the brain to pick up on waves that it usually can't hear. Perhaps some sort of omnipresent "buzz of the universe". Like if the universe ran on a motor, this would be the sound it makes? Not sure but I'd be interested to know if anybody else here gets this.

Also called the carrier wave. Very common with DMT trips. Haven't had the experience with Ayahuasca though.

Sufi mystics had a technique to tap into this buzz and enter ecstatic states.

I have no idea what it is, but it certainly is commonly experienced.

Yeah, I know the buzz. For me it's actually a characteristic of the harmalas and not the DMT, but it's much more present when the two are combined. When the trip gets strong the buzz can exist in and of itself, but at calmer levels it's sort of like every other sound passes through the filter of this motor-hum buzz.

I have never experienced it on mushrooms... and I think it was rare when I had teas compared to when I smoked.

when I first got into psychedelics, I became totally obsessed with the whirring sound I picked up on during my experiences. it's like an insectoid, bubbling, murmuring oscillation-- deep deep deep inside my consciousness. but I can also feel it in the top of my solar plexus.

there can definitely be an ecstatic lunacy in putting all focus on the sound. there have been times when I let my face go totally slack try to match the sound in its undulation in the base of my throat. (waaaahwowwahwahwaaaahwahwahwahwahwahwowowowah and so on...) it lead to some seriously insane mental spaces that I don't think I have the vocabulary to illuminate.

anyway, yeah. dig the carrier wave. it's a big part of my love for tripping.