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In this paper, we present a framework for unsupervised domain adaptation of PLDA based i-vector speaker recognition systems. Given an existing out-of-domain PLDA system, we use it to cluster unla-beled in-domain data, and then use this data to adapt the parameters of the PLDA system. We explore two versions of agglomerative hierarchical clustering that use(More)
This paper introduces the systems and technologies used for the development of computer-aided speech and language therapy tools. These tools (" Pre-Lingua " , " Vocaliza " and " Cuéntame ") aim to help speech and language disabled people to improve their communication abilities, covering all the processes in the acquisition of the spoken language (from(More)
This paper addresses the problem that disabled people face when accessing the new systems and technologies that are available nowadays. The use of speech technologies, specially helpful for motor handicapped people, becomes unapproachable when these people also suffer speech impairments, making the gap in the society wider for them. As a way to include(More)
This paper introduces Vocaliza, a software application for computer-aided speech therapy in Spanish language. The objective of this application is to help the daily work of the speech therapists that train the linguistic skills of Spanish speakers with different language pathologies. The application works at three levels of language: phonological, semantic(More)
This paper addresses the problem of speaker segmentation in two-speaker telephone conversations, using an eigenvoice based factor analysis approach. We present a set of improvements in the speaker segmentation system. First, we study two methods to compensate for intra-session variability, that is the variability present in a speaker during a single(More)
OBJECTIVE The laparoscopic treatment of eventrations and ventral hernias has been little used, although these hernias are well suited to a laparoscopic approach. The objective of this study was to investigate the usefulness of a laparoscopic approach in the surgical treatment of ventral hernias. METHODS Between January 1994 and July 1998, a series of 100(More)
This work presents the results in the analysis of the acoustic features (formants and the three suprasegmental features: tone, intensity and duration) of the vowel production in a group of 14 young speakers suffering different kinds of speech impairments due to physical and cognitive disorders. A corpus with unimpaired children's speech is used to determine(More)