METHOD AND APPARATUS FOR BROADCAST MEDIA AUDIENCE MEASUREMENT

摘要

A method and apparatus for broadcast media audience measurement including a receiver (24) for scanning and sampling each broadcast frequency within a predetermined band and outputting sampled audio frequency signals, a microphone (20) for "listening" to sound emanating from a monitored broadcast receiver (12), an audio frequency signal detector (30) for comparing the scanned audio signals to the audio output developed by the microphone and for indicating a match, a clock/calendar (34) for generating time and date signals, a processor/controller (44) for causing the receiver to perform a frequency scan and for recording in a storage means (40) information including the identity of the matching station and the date and time of the match, and for causing the stored information to be transmitted to a remote location via suitable communication media. Additionally, mobile systems may also include proximity detection capability for identifying listener visits.