Brown noise
Most-requested ADHD soundscape. Stochastic resonance evidence is strongest in children (Söderlund 2010); adult self-report is consistent.
The Focus Station
Brown noise, binaural beats, Pomodoro — for ADHD brains.
Eight soundscapes ADHD adults reach for, with a Pomodoro timer built in. No signup, no login, no app. The research is real — we cite it on every card. The player runs in your browser; nothing is sent anywhere.
Focus block
25:00
40%
Soundscapes
Pink noise
1/f spectrum, softer than white. Used in sleep research and some attention studies. (Söderlund 2007)
White noise
The original NICE-hypothesis soundscape. Strongest individual evidence in inattentive children. (Söderlund 2010)
40 Hz binaural
Gamma-band binaural beats. Some studies show short-term vigilance benefit (Lane 1998); effect is individual.
Rain on roof
Stable broadband mask. Subjective autonomic-recovery benefit (Alvarsson 2010).
Fireplace
Low-frequency broadband mask. Similar mechanism to rain.
Coffee shop
Mid-frequency human-presence ambience. Ties to body-doubling and social facilitation literature.
Forest at dawn
Variable nature sound. Lower stress reactivity (Alvarsson 2010).
Ambient loops are placeholders until the operator drops CC0 audio at /assets/focus/<name>.mp3. Generated tones (brown/pink/white/binaural) work today via Web Audio API.
The research
The cognitive lift from broadband noise in inattentive brains is the most reliable effect in this literature — the Noise-Induced Cognitive Enhancement (NICE) hypothesis (Söderlund, Sikström, et al. 2007, 2010, 2014). Most studies are on children; adult ADHD evidence is mechanistically plausible, smaller, and ongoing. Binaural beats and lo-fi music are individually variable. We cite the actual papers, we don’t overclaim.
Read the full research notes → · Open the EF Kit → · Tip the jar →