Pink Noise — 3 Hours
pink noiseの3 Hours — 広告なし、バッファリングなし。スリープタイマー付きで無料。
今すぐ聴く
YouTubeから厳選した長時間pink noise。クリックで再生 — ページを離れる必要はありません。
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.
最適な用途
3 Hours — 使い方
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 — すべての長さ
Pink Noiseのバリエーション
3 hoursの他のサウンド
Softlyを選ぶ理由
広告なし。永久に。
睡眠中の中断なし。午前3時の広告なし。ただ音だけ。
フェード付きスリープタイマー
音が眠りを誘い、グラデーションフェードがレム睡眠を邪魔しません。
オフラインモード
バッファリングなし。WiFi不要。ダウンロードしてどこでも聴けます。
もっと詳しく
よくある質問
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.