The Infinite Dial
  An annual study of multimedia listening beginning in 2007
The Infinite Dial is an annual study by Edison Research in cooperation with Nielsen (formerly Arbitron). It explores the world of radio in all its forms, including digital platforms and podcasting.
 
The Infinite Dial
 
  2017 2016 2015
2014 2013 2012 2011
2010 2009 2008 2007