BabySoothe

Baby Acoustic Soothe System

4 scientifically-grounded acoustic scenarios for colic, sleep, and soothing. No screen interaction needed — flip the phone, audio continues.

🔊 Start Scenarios

📱 Audio continues even if the screen dims. WakeLock is active to keep it on. You can also flip the phone face-down for dark + audio mode.

SCENARIOS

4 Acoustic Scenarios

Every scenario is synthesized in your browser. Audio data is never sent to any server.

🌊

Deep Shush

Modulated white noise for colic · 5 min

Remaining 5:00

800 Hz-centred noise modulated at 0.25 Hz (maternal breathing rhythm) mimics the human shush sound. Based on Harvey Karp's Calming Reflex research: activates the innate soothing reflex present in all newborns.

💓

Utero Rhythm

65 BPM, 80 Hz maternal heartbeat · 5 min

Remaining 5:00

75 BPM sharp-attack heartbeat + subtle sub-frequency 'blood flow' ambience. Baby hears this rhythm 24 h/day in utero; after birth it remains the strongest contextual soothing anchor.

🎵

Calm Wave

396 Hz dual-oscillator, gentle chorus · 5 min

Remaining 5:00

396 Hz + 408 Hz dual oscillator (12 Hz detune) creates a natural chorus. The rich harmonic texture — unlike a harsh pure sine — sustains infant attentional focus and eases sleep onset.

🌅

Gentle Transition

700 Hz soft rustle — wake transition · 5 min

Remaining 5:00

Slowly rising 700 Hz band-pass noise simulates the gradual frequency shift of the REM wake cycle. 700 Hz delivers a gentle wake cue without the harshness of higher frequency bands.

⚠️

Honesty Notice: This is not a translation — it is an acoustic aid designed to evoke biological soothing responses. It cannot replace pediatric guidance for babies with health concerns. Audio is processed on your device only; no sound recording is made. Keep speaker at least 2 m from baby. We recommend setting device volume to 50–60%.