Aggregate a posteriori linear regression for speaker adaptation

Chih Hsien Huang*, Jen-Tzung Chien

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

In this paper, we present a rapid and discriminative speaker adaptation algorithm for speech recognition. The adaptation paradigm is constructed under the popular linear regression transformation framework. Attractively, we estimate the regression matrices from the speaker-specific adaptation data according to the aggregate a posteriori criterion, which can be expressed in a form of classification error function. The goal of proposed aggregate a posteriori linear regression (AAPLR) turns out to estimate the discriminative linear regression matrices for transformation-based adaptation so that the classification errors can be minimized. Different from minimum classification error linear regression (MCELR), AAPLR algorithm ha closed-form solution to achieve rapid speaker adaptation. The experimental results reveal that AAPLR speaker adaptation does improve speech recognition performance with moderate computational cost compared to the maximum likelihood linear regression (MLLR), maximum a posteriori linear regression (MAPLR) and MCELR.

Original languageEnglish
Title of host publication2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05 - Proceedings - Image and Multidimensional Signal Processing Multimedia Signal Processing
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)0780388747, 9780780388741
DOIs
StatePublished - 1 Jan 2005
Event2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05 - Philadelphia, PA, United States
Duration: 18 Mar 200523 Mar 2005

Publication series

NameICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
VolumeI
ISSN (Print)1520-6149

Conference

Conference2005 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP '05
CountryUnited States
CityPhiladelphia, PA
Period18/03/0523/03/05

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