You've heard, by now, about Arbitron's new device for measuring radio listening: the portable people meter (PPM). It picks up electronically encoded signals from radio stations (even if they're heard ...
Arbitron Inc., the leading provider of radio ratings, said Tuesday that it would begin introducing its “Portable People Meter” ratings measurement device in the top 50 U.S. markets, replacing paper ...
Nielsen on Thursday said that it will begin placing about 3,000 new Portable People Meter Wearables into use among its almost 60,000 active panelists used to measure audiences for the ratings company.
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