You are listening to: Brown Noise
Compared to white and pink noise, brown noise has the most bass. Personally, I think brown sounds the best.
Try something else?
|Brown Noise||+ Vibrato|
|Pink Noise||+ Vibrato|
|White Noise||+ Vibrato|
If the noise just seems annoying at first, try sticking with it for a few minutes. Try to ignore the noise. Instead, concentrate on your work.
After a few minutes most people find they don't really notice the noise anymore and other sounds (television, construction, etc) are harder to hear and less annoying.