Analysis of the Influence of Speech Corpora in the PLDA Verification in the Task of Speaker Recognition

In the paper recent methods used in the task of speaker recognition are presented. At first, the extraction of so called i-vectors from GMM based supervectors is discussed. These i-vectors are of low dimension and lie in a subspace denoted as Total Variability Space (TVS). The focus of the paper is...

Full description

Saved in:
Bibliographic Details
Published inText, Speech and Dialogue pp. 464 - 471
Main Authors Machlica, Lukáš, Zajíc, Zbyněk
Format Book Chapter
LanguageEnglish
Published Berlin, Heidelberg Springer Berlin Heidelberg
SeriesLecture Notes in Computer Science
Subjects
fusion
i-vector
latent space
PLDA
supervector
Online AccessGet full text

Cover

More Information
Summary:In the paper recent methods used in the task of speaker recognition are presented. At first, the extraction of so called i-vectors from GMM based supervectors is discussed. These i-vectors are of low dimension and lie in a subspace denoted as Total Variability Space (TVS). The focus of the paper is put on Probabilistic Linear Discriminant Analysis (PLDA), which is used as a generative model in the TVS. The influence of development data is analyzed utilizing distinct speech corpora. It is shown that it is preferable to cluster available speech corpora to classes, train one PLDA model for each class and fuse the results at the end. Experiments are presented on NIST Speaker Recognition Evaluation (SRE) 2008 and NIST SRE 2010.
ISBN:3642327893
9783642327896
ISSN:0302-9743
1611-3349
DOI:10.1007/978-3-642-32790-2_56