Speech, Speaker and Speaker's Gender Identification in Automatically Processed Broadcast Stream
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Date
2006
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Spolecnost Pro Radioelektronicke Inzenyrstvi
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Abstract
This paper presents a set of techniques for classification of audiosegments in a system for automatic transcription of broadcast programs. The task consists in deciding a) whether the segment is to be labeled as speech or a non-speech one, and in the former case, b) whether the talking person is one of the speakers in the database, and if not, c) which gender the speaker belongs to. The result of the classification is used to extend the information provided by the transcription system and also to enhance the performance of the speech recognition module. Like the most of the state-of-the-art speaker recognition systems, the proposed one is based on Gaussian Mixture Models (GMM). As the number of the database speakers can be large, we introduce a technique that speeds up the identification process in significant way. Furthermore, we compare several approaches to the estimation of GMM parameters. Finally, we present the results achieved in classification of 230 minutes of real broadcast data.
Description
Subject(s)
Speaker recognition, Gaussian mixture models, broadcast speech transcription
Citation
ISSN
1210-2512