What you're hearing
- Light rain
- Pink noise
Most sounds here are generated live in your browser, so nothing long downloads before it plays. The full mixer adds more sounds, other versions of each, and real recordings.
Questions
- How loud should it be?
- Low. The study authors advise placing the machine as far from the baby as possible, never in or on the cot, keeping the volume low and playing it only for a short time. The timer helps with the last part. Source: Hugh et al., “Infant sleep machines and hazardous sound pressure levels”, Pediatrics, 2014.
- Should it play all night?
- Many parents use it to settle the baby and let it fade out. The timer fades the sound out over the last 30 seconds.
- Is there music or thunder?
- No. Only gentle rain and soft noise.
- Is it free?
- Yes, for now everything is free, the real recordings included. There is nothing to sign up for, nothing to install and no ads. Later some real recordings may move to a paid option; the sounds made in your browser will stay free.