Arbitron makes the device called the PortablePeopleMeter (PPM) to measure radio station listenership.
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The suit accused the company of failing to disclose flaws in its PortablePeopleMeter system, used to compile radio station audience size estimates.
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Arbitron is a media ratings service company that makes the device called the PortablePeopleMeter (PPM) to measure radio station listenership.
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The suit accused the company of failing to disclose flaws in its PortablePeopleMeter (PPM) system, used to compile radio station audience size estimates.
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Revenue for the company, which makes the device called PortablePeopleMeter to measure radio station listenership, fell 4 percent to $98 million.