| 摘要 |
A bias compensating remote audience survey system ( 34 ) is configured to identify radio stations ( 162 ) to which tuners ( 24 ) are tuned. The tuners ( 24 ) have predetermined signals ( 26 ) emitted therefrom. The survey system ( 34 ) employs a method ( 152 ) of compensating for a station bias, or preference, toward or against one or more of radio stations ( 162 ). The method ( 152 ) includes measuring durations ( 62 ) over which the predetermined signals ( 26 ) are received by the survey system ( 34 ). The durations ( 62 ) are then combined by averaging to form a station average detection length (ADL) value ( 74 ) specific to one of the radio stations ( 162 ). The station ADL value ( 74 ) is compared to a multi-station ADL parameter ( 86 ). A sensitivity level ( 146 ) for the one radio stations ( 162 ) is adjusted in response to the comparison to compensate for station bias.
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