Molly rested her head on my chest, and made quiet noises of contentment.

The only reason I know he's still alive is because the machines he's hooked up to are making quiet noises.

I rock Lia gently and make quiet noises into her hair until Chloe reaches us and takes her from me.

He is still in his cradle, but I can hear him cooing, little quiet noises like a duckling quacking to itself on a still pond.