Now, you can get a cheap white noise app that does the exact same thing plus a few more choices. (rookiemoms.com)
You can download white noise apps on your smart phone, buy teddy bears that make white noise, or (what I have found to be just as effective) making the «sushing» noise in my baby's ear. (modernmom.com)
There are lots of white noise apps for smart phones, there are white noise machines and if you are in a pinch, you can turn on the vacuum or blow dryer for instant white noise. (thespruce.com)