Joint signal and transcription analysis for named speaker identification

For some years, processing mass of multimedia documents has become a very crucial issue for applications like indexation or information retrieval. Among the focused information, speaker identity can be very useful for such applications. A huge collection of documents cannot be manually processed with a reasonable cost: only automatic systems are a relevant solution.In this paper, we consider the extraction of speaker identity (firstname and lastname) from audio records of broadcast news. Using a rich transcription system, we present a method which allows to extract speaker identities from automatic transcripts and to assign them to speaker turns. Experiments are carried out on French broadcast news records from the ESTER 1 phase II evaluation campaign. MOTS-CLÉS : identification nommée du locuteur, reconnaissance du locuteur, transcription enrichie.