White Noise — 2 Hours

White Noise for 2 hours is ideal for deep work session, extended study block, evening wind down. Two hours covers a standard deep work block - long enough to reach and sustain flow state, short enough to prevent the cognitive fatigue that accumulates in longer sessions.

White noise contains equal energy across all audible frequencies — from the deepest bass to the highest treble. It sounds like TV static, a fan on high, or a rushing air vent. It's the broadest-spectrum masking sound available, which makes it the most effective at covering a wide range of environmental noise. White noise was the first type of noise studied for cognitive and sleep benefits, and the evidence is extensive though mixed — the Capezuti systematic review (2022) found only 33% of white noise studies showed clear positive sleep outcomes. The Nigg meta-analysis (2024) found white noise beneficial for ADHD cognition (g=0.249) but harmful for neurotypical adults (g=−0.212), suggesting it works for those who need external stimulation but overstimulates those who don't. Many listeners find white noise harsh for extended periods due to its prominent treble content. If white noise feels fatiguing, try pink or brown noise instead.

Two hours covers a standard deep work block - long enough to reach and sustain flow state, short enough to prevent the cognitive fatigue that accumulates in longer sessions. Cal Newport's research on deep work suggests that most knowledge workers can sustain 2-4 hours of truly focused work per day. A 2-hour session with this sound is a single deep work block. Plan a 15-20 minute break afterward.