Here is a video of vacuum cleaner noise and sound for 8 hours. The white noise can be good for sleep, especially for newborn babies and toddlers.
If you have a baby that is having a hard time napping and sleeping, try to play this video near the crib or whatever the baby sleeps in.
The vacuum used is a Dyson.
8 Hours of Vacuum Noise
The video and audio plays for a full 8 hours (480 minutes).
You can click the video to play it on YouTube, too.