What is abritron inc?

Arbitron is a radio audience research company in the United States which collects listener data on radio audiences similar to that collected by Nielsen Media Research on television audiences. It was founded as American Research Bureau by Jim Seiler in 1949 and became bi-coastal by merging with L.A. based Coffin, Cooper and Clay in the early 1950s. ARB's initial business was the collection of television broadcast ratings exclusively.