Interesting links: 
The first is the sound of a 1.6MW wind turbine about a quarter of a mile away. 
The second is what is sounds like directly underneath. 
Lastly, is an interview on Michigan Public Radio that interviews the residents of Breckenridge, MI about the Gratiot Wind farm. 

In June 2012, the Gratiot Wind Project went live (212.8 MW), earning Michigan’s first & only countywide Wind Energy Zoning and unanimous approvals for 133 General Electric 1.6 MW turbines on 100 meter towers.  More than 55,000 homes are being served at a locked-in price, through a 20-year power purchase agreement (PPA) with Detroit Edison.  Over the next 19 years, more than $19 million in property taxes and $40 million in lease payments will provide “new wealth from the wind,” from the Gratiot Wind Project.  

Since 2012, the price of wind-generated electricity has fallen significantly primarily because of increased wind capacity factors and more productive technologies (lower turbine start up speeds), thus driving down the Levelized Cost of Energy (LCOE) and Life Cycle Costs.