I got diagnosed with ADHD at 47. Late enough to have spent a few decades thinking I was just bad at being consistent.
One of the first things that started making sense, post-diagnosis, was this: I have always needed noise to concentrate. Not silence. Not music. Noise. Steady, predictable noise. My whole career.
I thought it was a quirk. Turns out it's fairly common in ADHD brains.
The simplified version of why goes something like this.
ADHD involves lower dopamine activity in the prefrontal cortex — the part of your brain doing the concentrating. When dopamine is low, the brain looks for stimulation. That's what the "attention" problem actually is: not an inability to pay attention, but an inability to regulate where attention goes when the current thing isn't stimulating enough.
External noise — the right kind — can provide a baseline level of stimulation that stops the brain from going looking. Not in a sedating way. More like: the brain has enough input, so it stops demanding more.
Brown noise and pink noise work particularly well for this. They're complex enough to occupy the brain's auditory processing without being interesting enough to actually distract. The sweet spot.
I can't tell you if this is the mechanism for you specifically. Brains vary. But a lot of people with ADHD report the same thing — focus is better with noise than without it, and the quality of the noise matters.
Before I built Quilence, I used to leave YouTube running in the background. Brown noise videos, four hours long, set to half volume. It worked. It was also faintly embarrassing, feeding a Google algorithm with eight hours a day of "brown noise for focus" signals.
The apps I tried were worse. Either too simple — one sound, a volume slider, a paywall — or overcomplicated with features I didn't want. Binaural beats. Guided breathing. A subscription that renewed yearly.
I wanted a synthesizer. Not a playlist. Something I could tune.
The Quilence ADHD Relief preset is built around the mid-frequency range — roughly where speech sits, where distractions tend to live. It masks conversations. It fills the acoustic space between tasks.
But honestly, the preset is just a starting point. Different ADHD brains, different sensory profiles. Some people need more bass. Some need the spatial audio spread wider. Some want it narrow and up-front.
The 10-band EQ is there for exactly this. It's not complexity for its own sake. It's because one setting doesn't fit everyone, and for people who've spent decades figuring out workarounds, having actual control matters.
I'm still learning what works for me. That's the honest version.
Post-diagnosis life is partly just going back through everything and realizing — oh, that was a coping strategy. The noise was always a coping strategy. It just works better now that I understand why.