Pink Noise — 3 Hours
pink noise 3 Hours — 광고 없음, 버퍼링 없음. 수면 타이머 포함 무료.
지금 듣기
YouTube에서 엄선한 장시간 pink noise. 클릭하여 재생 — 페이지를 떠날 필요 없습니다.
Pink Noise for 3 hours
Pink Noise for 3 hours is ideal for study session, half day coverage, creative work marathon. Three hours spans a full morning or afternoon study session.
Pink noise loses about 3 decibels per octave as frequency increases — halfway between the brightness of white noise and the depth of brown noise. The result sounds like a gentle waterfall, steady rain, or wind through trees — natural, balanced, and warm. Pink noise has the strongest scientific evidence of any ambient sound. A Northwestern University study found it extends deep sleep (slow-wave sleep) by 25% and improves next-day memory recall, because its frequency profile matches the brain's own sleep oscillation patterns. A systematic review by Capezuti et al. (2022) found that 81.9% of pink noise studies showed positive sleep outcomes, compared to just 33% for white noise. For older adults, pink noise improved memory recall by 3x (Papalambros et al., 2017). Important caveat: Basner et al. (2025, UPenn) found continuous pink noise at 50 dB reduces REM sleep by 18–19 minutes — use a sleep timer.
최적 용도
3 Hours — 사용 시기
Three hours spans a full morning or afternoon study session. At this duration, built-in breaks become essential - research shows that Pomodoro-style structuring (25 min focus + 5 min rest, repeated) produces better outcomes than 3 hours of uninterrupted work (BMC Medical Education, 2025: focus correlation r=0.72). Use this duration as background for a structured work period, not as an unbroken concentration marathon.
Pink Noise — 모든 길이
Pink Noise 변형
3 hours의 다른 사운드
Softly를 선택하는 이유
광고 없음. 영원히.
수면 중 방해 없음. 새벽 3시 광고 없음. 오직 소리만.
페이드 수면 타이머
소리가 잠들게 하고, 점진적 페이드가 렘 수면을 방해하지 않습니다.
오프라인 모드
버퍼링 없음. WiFi 불필요. 다운로드하여 어디서나 듣기.
더 알아보기
자주 묻는 질문
What is pink noise?
Balanced noise that loses 3 dB per octave. Sounds like a gentle waterfall or steady rain. Has the strongest scientific evidence of any ambient sound for sleep.
Is pink noise good for sleep?
Yes — pink noise rates 5/5 for sleep on Softly. Pink noise loses about 3 decibels per octave as frequency increases — halfway between the brightness of white noise and the depth of brown noise. The result sounds like a gentle waterfall, steady rain, or wind through trees — natural, balanced, and warm.
How long should I listen to pink noise?
Three hours spans a full morning or afternoon study session. At this duration, built-in breaks become essential - research shows that Pomodoro-style structuring (25 min focus + 5 min rest, repeated) produces better outcomes than 3 hours of uninterrupted work (BMC Medical Education, 2025: focus correlation r=0.72). Use this duration as background for a structured work period, not as an unbroken concentration marathon.