White Noise Generator
Noise with different frequency characteristics for various uses
18%
White Noise
Features
- •Uniform across all frequencies (like "hissing")
- •Strongest masking ability
Suitable For
- •Noise-sensitive individuals
- •Urban dwellers
- •Light sleepers
- •Newborns (commonly used in hospitals)
Research Support
- •Journal of Caring Sciences
- •Sleep Medicine Reviews
⚠ Drawbacks
- •Some find it harsh
- •Not recommended for long-term high volume
Pink Noise [More Adult-Friendly]
Features
- •Stronger low frequencies, weaker high frequencies
- •More similar to natural sounds
Scientific Findings (Key Points)
- •Can increase slow-wave sleep (deep sleep)
- •Enhances memory consolidation
Classic Research
- •Nature Neuroscience, 2013: Pink noise can synchronize brain slow-wave activity
This is currently one of the 'scientifically best-reviewed' sleep sounds
Brown Noise
Features
- •Lower frequencies
- •Similar to distant thunder, deep waterfall
Suitable For
- •Anxious individuals
- •ADHD
- •People sensitive to white noise
Natural Sounds (Most Acceptable)
- •Rain, ocean waves, wind, forest sounds, stream sounds
Advantages
- •Low information density
- •Good emotional soothing effect
- •Highest acceptance rate
Psychological Research Shows
Natural sounds can reduce cortisol levels (stress hormone)