You know what white noise is - but what about brown noise?

Do you know the color of noise? 

Well-known white noise is considered the flattest. It’s a continuous sound with level frequency that covers a broad spectrum. Static noise is white noise. Here are some lesser known noise colors:

* Pink noise is similar to white, except with an emphasis on lower frequencies. It’s less noisy than white noise, more like a waterfall. 

* Brown noise is the lowest noise. It’s more of a soft, deep rumbling. Thunder, trains and that sub woofer from the car in front of you falls into this category.

* Black noise has a few different definitions but is most commonly considered the absence of noise, silence.