I recently discovered this “ability” and start doing my job without hearing aids. Basically, silence is golden for me and helps a lot with my productivity.
I recently discovered this “ability” and start doing my job without hearing aids. Basically, silence is golden for me and helps a lot with my productivity.
What helps me is predictable sounds - like music I've listened to many times before.
I have also found that certain not types of older TV shows hit the white noise level where they get me moving, but don't pull me out of my thoughts too often. This is mostly for things where the goal is just to keep moving on something, not where the goal is to think deeply.
The worst situation is feeling the need for enough audio stimuli to feel “right”, but that level is too distracting to allow for focus.
Meta analysis of them here, https://link.springer.com/article/10.1007/s00426-018-1066-8 , full paper is on sci-hub.
Almost everything about binaural beats is very non-sciency and full of woo and nonsense, but if the ability to "hear" the brain artifact that doesn't register on the spectrogram of the sound caused by them were different for people experiencing hearing loss, experiencing the binaural beat "tone" in your head could indicate the persistence of some kind of physiological effect independent of direct hearing ability. If a person with reduced hearing didn't hear the binaural beat artifact, it would probably be just a harmonic or a simple wave interference pattern, and not the mysterious phenomenon it gets sold as.
I ask because they are a particular type of noise that you can use for focus and consistency to drown out other noises, similar to white, pink, rain sounds and other flavours of noise.
It is hard to find sound generators that would produce rhythmic beats rather than randomizing few beats here and there. Something like “beeee boop beeee boop beeee boop” or “swish bah swish bah swish bah” beats is what I prefer. My partner always looks at me funny everything I dance when my top-loader washing machine is on because it always produces simple rhythmic beats. Same for my dishwasher sounds.
The beats are the artifact of directing two frequencies with a difference of only a few Hz, one per ear, and the "beat," phenomenon is a pulse we mentally feel as the result of the brain allegedly straining either to distinguish or consolidate the two tones from each ear as the same or separate. The tension between the tones does manifest as a kind of stimulation or subtle irritation, and higher frequencies could plausibly create an anxiety effect, like metal on metal you described.
Max Richter's "Sleep" is a recent artistic implementation of these, where different ones are used as a backing track throughout. I'm hacking around with reproducing them on a synth rig, but even then, the stuff written about them is mostly using pure sine waves, so even if you get interesting sound effects from other types of waves (saw, triangle, pulse, etc), there's not much in the way of empirical control.
Rare opportunity for the question to be on topic so had to ask, thank you!
So, well into the speculative here, if binaural beats are indeed a real thing, e.g. that by offsetting a tone between two ears and frequencies it produces a third epiphenomanal artifact that is not explicitly "heard," but processed outside the range of what the ear can distinguish by the brain, it does imply we could take any sound and then modulate it so that it appeared or was realized in this meta effect range where the brain automatically processes it.
If binaural beats are not real, then there's a lot of speculative woo that automatically gets debunked. But if they are real, and there were a way to take a frequency or sound, and modulate it so that the effect could be processed by the brain as an artifact of its own processing and not as the actual physical "sound," that could be interesting. Maybe the way hearing aids EQ sounds also shifts frequencies and folds them into the range the listener can physically hear already. If there were a meta sound that binaural beats in effect claim to be, there would also be an FFT that would take a given sound input and transform it through stereo headphones to produce it at the frequency one could "hear" as an artifact of the brain reconstructing it.
I'm well into the territory of "dare to be stupid" speculation here, but the premise of creating a binaural beat to create this super-audible artifact, then modulating the artifact effect to transmit the information would be pretty interesting (probably even an ffmpeg one liner). I like cuban cigars and american whiskey if someone reading this becomes a billionare as a result of implementing it, but if it doesn't make a difference, there's a whole subculture of binaural beat internet woo that needs to know it isn't a thing. :)
But for me, the outside world's time seems to go faster, not slower. It's like the more I'm focusing on my task at hand, the less I notice the passage of time around me.
I'm curious why our hyper-focus experiences differ in that way.
Where time perception starts to skip as the brain becomes hyper focused on a task. One of the things I've noticed (having ADD) is that it's easy to enter into flow and accomplish much, but can be difficult to master what you enter flow with.
Adderall is like that for me. It works wonders, but heaven forbid I'm focusing on the wrong thing as it kicks in.