Crediting exposure to media identified using source filtering

Abstract

In one example, a method performed by an audience measurement computing system is described. The method includes determining a source identifier that identifies a media source from which media presented by a media presentation device at a media presentation environment is received. The method also includes using meter hash keys and the source identifier as a basis to select, from stored reference hash keys representing signatures of previously-identified media, a set of reference hash keys that match the meter hash keys and correspond to the source identifier, each reference hash key associated with a corresponding media identifier, where the meter hash keys are generated based on meter signatures representing the media. The method also includes identifying the media based on the set of reference hash keys. The method also includes generating exposure data that credits exposure of an audience member at the media presentation environment to the identified media.