After months of negotiations, Nielsen Holdings announced today that it has completed the acquisition of Arbitron, Inc. Nielsen’s CEO, David Calhoun, said that the move allows the company to analyze and understand an additional two hours of a U.S. Consumer’s day while providing advertisers with information on the effectiveness of the media they use to advertise. Arbitron will now be known as “Nielsen Audio“.

Nielsen entered into agreement with Arbitron on December 17, 2013 to acquire all outstanding common stock for $48.00 per share totalling $1.3 billion.