[CentOS] Noise Cancellation of Server Noise

Sat Dec 24 21:43:46 UTC 2016
H <agents at meddatainc.com>

Has anyone come across a device that could cancel out the noise from servers, ie. the fan noise? I have  a server rack near my office and would like to see if i can decrease the noise level. It would seem to me that the steady drone of the fans could be cancelled out to a large extent.