FIELD GUIDE 02 · NURSERY SOUND
Hatch Sound Machine:
A Nursery Sound & Distance Model
Use a measured sound level and source-to-crib distance to estimate how sound falls across open space, then compare the device details that matter to your room.
Editorial research · Pediatric Gear Safety, Nursery Ergonomics & Early Feeding Standards Desk · Updated October 2026
A practical place to begin
One less thing to guess.
Explore clear comparisons, see the assumptions, and keep the setup that helps you decide.
Just a clearer starting point.
WELCOME BOXES + COMPLETION OFFERS
What could your registry add up to?
Choose an offer, then compare its terms with your own costs.
Target’s kit is described as valued over $100. Eligibility and coupon restrictions apply; enter shipping/tax if applicable. See Target’s current terms ↗
Estimate only. Box contents vary. Target’s terms say shipping/handling fees apply; the default excludes them. Completion offers have eligibility rules and exclusions. Adjust the values above to match your terms.
STANDARD BAGS VS. REFILL RINGS
What does the pail cost over time?
Set your use profile and compare editable example prices.
Edit the example price assumptions
Every value is editable. This is a simple ownership estimate, not a live price feed; actual bag capacity and use vary by product and household.
MEASURED SOUND + DISTANCE
See how distance changes the estimate.
Compare two placements with a simplified open-space model.
Open-space estimate · furnishings and room acoustics change real measurements
A simplified inverse-distance estimate in open space. It is not a room simulation, safety assessment, or medical threshold. Follow device instructions and ask a qualified clinician about individual concerns.
AGE + CUP OPTIONS
Explore cup formats without a one-size-fits-all answer.
Age is context, not a readiness test. Explore plain-language cup formats.
A simple cup without a lid or valve. Design and spill resistance vary.
Breast milk and/or infant formula remain the main source of nutrition from 6 to 12 months. For individualized feeding concerns, ask your child’s clinician.
Select up to three scenarios to compare.
01 / WHAT THE CALCULATOR DOES
Estimate, then measure.
The calculator applies the inverse-square relationship for sound spreading through open space: L₂ = L₁ − 20 log₁₀(d₂ / d₁). With the example inputs of 65 dBA at 50 cm and a crib position 200 cm away, the estimate is 52.96 dBA.
That number is a simplified estimate. It assumes the source behaves like a point source in a free field. Walls, floor and ceiling reflections, furniture, device direction, and how the original measurement was made can change the level in an actual room.
02 / PRODUCT DETAILS
Choose for your room and routine.
Compare physical controls, portability, power backup, timer behavior, and the manufacturer’s measured output at a stated distance. The research catalog contains example device specifications; confirm the model and current details with the maker before purchasing.
| Model in source notes | Control approach | Retail price reference |
|---|---|---|
| Hatch Rest (2nd Gen) | Wi-Fi, Bluetooth app + touch ring | $69.99 |
| Hatch Rest+ (2nd Gen) | Wi-Fi, charging base + LED clock | $89.99 |
| Hatch Rest Go | On-device buttons, portable clip | $34.99 |
Source catalog snapshot: October 2026. Price and specifications are not live feeds and can change.
03 / SOUND AROUND SLEEP
An estimate is not a safety assessment.
This calculator shows how a measured sound level changes under a simplified open-space model. It does not determine an appropriate volume, a safe exposure duration, or suitable placement for an individual infant.
Follow your sound machine’s instructions and ask a qualified clinician about a specific concern. Real rooms have reflections and obstructions that the formula cannot model.
04 / PRIMARY SOURCES
Check the original research.
The American Academy of Pediatrics published a study measuring sound levels from infant sleep machines. It is historical research, not a personalized placement rule or a calculator-derived safety threshold.