Anyone who has spent a night with a six-week-old knows the catalogue: the slow build-up whimper before the full cry, the wet-mouthed coo at 4 AM, the bubble-popping giggle when something finally clicks. 42 baby sound effects across that range — newborn cries from the first weeks, sleeping breath with the soft sigh of an open mouth, baby cry sounds in mid-meltdown, short giggles caught on a parent's phone, and the half-second babble of a baby trying out a vowel.
Parenting-app explainers loop the sleeping breath underneath voiceover because it sells the bedtime context without anyone explaining it. Animation studios use the giggles and the syllable-babbles for newborn characters because actual baby vocalisations don't take direction. The longer cry takes split cleanly at natural breaths, so you can trim to any duration without the cut showing. Everything's free to download, no signup, no attribution required for commercial work.