When working from home or in a noisy office it can be helpful to have some background noise.
For example Coffitivity "recreates the ambient sounds of a cafe"
This site -- noise machines is extremely thorough.
White noise is particularly helpful to "camouflage the annoyance caused by tinnitus, a ringing in the ear occurring without any stimulus."
These background sounds are also helpful for tuning out the inane chatter and bustle of coworkers or the monotonous drone of your own existential dread.