Speaker change detection and tracking in real-time news broadcasting analysis
Lie Lu, Hong-Jiang Zhang · 2002
This paper addresses the problem of real time speaker change detection and speaker tracking in broadcasted news video analysis. In such a case, both speaker identities and number of speakers are assumed unknown. A two-step speaker change detection algorithm, including potential change detection and refinement, is proposed. Speaker tracking is performed based on the results of speaker change detection. A Bayesian Fusion method is used to fuse multiple audio features to get a more reliable result. The algorithm has low complexity and runs in real-time with a very limited delay in analysis. Our experiments show that the algorithms produce very satisfactory results.