White-noise in background

[danwanna]

Does anyone know of a white-noise app that will play in the background? Most of them support playing when the screen is off, but I am looking for one that will continue to play when another app is in the foreground.

For example, if I can't sleep, I would like to read on my phone while the white-noise continues to play. As it works now, turning off the white-noise to read will wake my wife which is never a good thing.

 

[Silviu Bogusevschi]

I found my 1520 on 8.1 DP makes some white noise after locking/unlocking, but it's quite low.