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Research papers

Latest developments on the portable people meter

The portable people meter (PPM) is a promising new media research tool that makes it possible to automatically track consumers’ exposure to the electronic media. An inaudible code is inserted into the audio signal of radio, television, cable and...

Catalogue: ARF/ESOMAR Worldwide Radio 2001
Authors: Robert H. Patchen, Brian Harris-Kojetin
Company: Nielsen
April 1, 2001