When used consistently, it acts as a psychological signal that it is time for bed.
Use the sound as part of a broader routine including swaddling and rocking.
Replicates the monotonous, low-frequency environment of the womb.
Place the sound source approximately 7 feet away from the baby's crib.
Effectively drowns out sudden household noises that might startle a sleeping infant. 🔊 Best Practices for Use
Keep sound machines or devices at 50 decibels or lower to protect developing hearing.
The rhythmic nature of "piş piş" (equivalent to "shh-shh") helps distract and calm babies suffering from gas or colic.