Audience survey system, and systems and methods for...

H - Electricity – 04 – B

Patent

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Details

H04B 17/00 (2006.01) H04H 9/00 (2006.01)

Patent

CA 2375853

A system and method are disclosed for performing audience surveys of broadcast audio from radio and television (1). A small body-worn portable collection unit (4) samples the audio environment of the survey member (5) and stores highly compressed features of the audio programming. A central computer (7) simultaneously collects the autio outputs from a number of radio and television receivers (6) representing the possible selection that a survey member may choose. On a regular schedule the central computer (7) interrogates the portable units (4) used in the survey and transfers the captured audio feature samples. The central computer (7) then applies a feature pattern recognition technique to identify which radio or television station the survey member (5) was listening to at various times of day. This information is then used to estimate the popularity of the various broadcast stations.

La présente invention concerne un système et un procédé de sondage d'audience de radiodiffusion sonore impliquant la radio et la télévision (1). Une petite unité de collecte (4) portative échantillonne l'environnement sonore du sujet sondé et stocke les caractéristiques hautement compressées de la programmation sonore. Un ordinateur central recueille simultanément les sorties audio à partir d'un certain nombre de récepteurs (6) de radio et de télévision représentant les sélections possibles qu'un sujet sondé peut choisir. Sur la base d'un horaire régulier, l'ordinateur central (7) interroge les unités portatives (4) utilisées dans le sondage et transfère les échantillons de caractéristiques sonores recueillis. L'ordinateur central (7) applique ensuite une technique de reconnaissance de motifs de caractéristiques pour identifier la station radio ou la chaîne de télévision que le sujet sondé (5) écoutait ou regardait à différents moments de la journée. Cette information est ensuite utilisée pour estimer la popularité des différentes stations de radiodiffusion.-

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