Guide / Updated 24 October 2026
How far from a crib should a sound machine go?
Place an infant sound machine as far away from the baby as practical, outside the crib. The American Academy of Pediatrics specifically recommends distance, low volume and limited duration. Source ↗
- The AAP says as far away from the infant as possible.
- Keep equipment and cords outside the sleep space.
- Distance alone does not make a loud setting safe.
How to try it
Choose a stable surface across the room, manage cables so they are out of reach, and listen from the crib position before leaving it on. If the sound is ineffective at a gentle level, try reducing the disruptive noise instead of moving the machine closer.
- Choose a stable surface across the room, manage cables so they are out of reach, and listen from the crib position before leaving it on.
- If the sound is ineffective at a gentle level, try reducing the disruptive noise instead of moving the machine closer..
- Distance is part of the setup because sound level at the listener changes with placement.
What to consider
Distance is part of the setup because sound level at the listener changes with placement. The browser tool cannot measure that level, and exact distances alone cannot guarantee a safe result in every room.
Think about reach and sound together
The AAP advises that an infant sleep machine be placed as far away as possible. The device should also stay outside the cot, with cables managed beyond reach. An across-room surface is often more appropriate than a crib rail or bedside attachment.
Listen from the place where the baby rests after you place the speaker. Do not set the level with the speaker in your hand and then move it. Walls, furniture and the direction the speaker faces can alter what arrives at the cot.
Distance is one part of a low-noise plan
A distant machine can still be too loud if its output is high. Start from zero and use the lowest setting that serves a clear purpose. If you can only make it effective by turning it up strongly, try lowering the disruptive household sound instead.
Exact distances quoted online do not describe every room or speaker. The most robust interpretation is practical separation, a gentle level and limited use. Keep the arrangement easy for another caregiver to follow.
Recheck when the room changes
Moving the crib, changing a Bluetooth speaker or adding thick curtains may alter what the child hears. Repeat the quiet-first check after such changes. A short timer may suffice when sound is mainly used to settle down.
Never rely on the browser slider to measure exposure at the cot. Seek advice for a specific safety or hearing concern; the site can provide general guidance but not a nursery assessment. Avoid placing any device so that a child can pull it down, even if it seems distant enough acoustically. A good location needs to satisfy both the sound guidance and ordinary room safety. When the sleeping arrangement changes, reassess both before using sound again, including where cables run and who can reach the controls.
Common questions
Is a machine on the crib rail a good place?
No. Choose a stable surface outside the cot and away from reach, with the sound source as distant as practical.
Can I set it first and move it later?
Moving changes what reaches the baby. Recheck the level from the sleeping position after any placement change.
Does a quieter spectrum allow a closer device?
Pink or brown color does not replace distance and low-level advice for infant sound machines.