a real time audio fingerprinting system for advertisement tracking and reporting in fm radio
TRANSCRIPT
A Real Time Audio Fingerprinting System for Advertisement Tracking and Reporting in FM Radio
José Ramón CERQUIDES ( [email protected]) Dept. of Signal Theory and Communications
University of Seville
Understanding the problem
Are my commercialsbeing aired as
agreed ?
When? Prime time, late night ? $$Where? Geographical area? $$How long? duration? $$How many? Daily aired items? $$
Digital SignalProcessing to therescue
Fingerprintextraction
Airedsignal
Demodulatedsignal
Sampled audiosignal
Fingerprint
AlgoritmoBúsqueda
Database
Identifyresults
On Screen
Log
What’s exactly anaudio fingerprint?
Audio fingerprint32 bits/12,8 ms~ 2500 bits/seg Audio fingerprints obtention procedure (Jaap – Haitsma method)
Audion informationDiscrete signalf s · Nb bits/seg
The search algorithm
Evolution of the BER during a detection
The application
