Has anyone noticed that robotic "pierce the veil" sound that your last exhale of breath make before your gone. And also when you come back but are still in the experience just able to open your eyes?
If not focus on your breathing and try to see what im talking about. Its like a sign that you're about to "breakthrough".

Nobody? I was sure this is a common occurrence. Very matrix - like

I experience a similar phenomenon where my voice and breath sounds like when a person enters/exits the matrix via a telephone. Usually this sound manifests visually as well, such that one's breathing and talking create the environment.
I've always thought about how things like this may be clues as to how the brain creates our reality (insofar as what we experience). Maybe that's why the Matrix references seem so fitting; because DMT shows us that this concept exists within ourselves.

i by no means broke through at all but as i was going through the journey i was able to speak of what was going on to my friend and my voice had sort of a waver robotic distortion to it all with a slight echo, the sound would float off and join a cloud of smoke that shaped the sound, it would almost repeat on its self with the echo a few milliseconds behind a few times in a row. and the pitch would drop and heighten

also there was like this doy doy noise that got faster and faster and higher and higher pitch that broke into almost a jet engine noise and the pinch kept getting higher as i fell back and it hit me
i remember the noise of like a robotic mech walking but i feel like this could have been my heart beat

Wow thanks for explaining that. I know exactly what you mean yet never had the words for it.

That doy doy sound reminds me of experiences when I've been talked to and as the words are repeated they grow increasingly faster until only the last word is being repeated in a higher pitch as if in fast forward. Often its been "go go".

oh yeah the classic doy doy sound. I know exactly what you mean. Its so easy for me to break through for some reason. It seems as the sound gets faster and higher i am bursting through different levels of hyperspace. I can see the layers peel away. Almost like some african drums until i get lost in it/myself. And go spiraling out of control just ... riding the waves. When the sound stops i'm always face to face with these pure white humanoid forms. Truly magnificent.

STFU&LOVE " the words are repeated they grow increasingly faster until only the last word is being repeated in a higher pitch as if in fast forward"

yeah felt similar to that thought i dunno, it felt like when you hear a tape cassette get eaten by the machine and it speeds up super fast and blurs into one distorted noise and pitch

Drfeelgood im looking forward to getting my first big breakthrough. i feel like i need to try and remake the noise into an audio track when i get the time

I hear a heavy wah wah wah pulse as I go in..