Arbitron

Arbitron, now part of Nielsen, was a company that specialized in measuring radio audiences. It collected data on what people listen to, helping radio stations understand their audiences and advertisers to target listeners effectively. Through methods like diary entries from listeners about their habits and technology-driven meters that track listening, Arbitron provided insights on demographics and preferences. This data was crucial for radio programming and advertising strategies, allowing stations and advertisers to make informed decisions about content and marketing efforts.