Now showing items 1-20 of 52

    • A bilingual Spanish-Catalan database of units for concatenative synthesis 

      Esquerra Llucià, Ignasi; Bonafonte Cávez, Antonio; Vallverdú Bayés, Sisco; Febrer Godayol, Albert (1998)
      Conference report
      Open Access
      Different databases of phonetic units are required in multilingual Text-to-Speech systems based on concatenative synthesis. We are currently developing a TTS system able to convert text either in Catalan and Spanish, with ...
    • A billingual texto-to-speech system in spanish and catalan 

      Bonafonte Cávez, Antonio; Esquerra Llucià, Ignasi; Febrer Godayol, Albert; Vallverdú Bayés, Sisco (Editors: G. Kokkinakis, N. Fakotakis, E. Dermatas; Editorial: WCL, University of Patras, Grece, 1997)
      Conference report
      Open Access
      This paper summarises the text-to-speech system that has been developed during the last years in the Speech Group of the Universitat Politccnica de Catalunya (UPC). The paper emphasises the parts of the system which are ...
    • Acoustic feature prediction from semantic features for expressive speech using deep neural networks 

      Jauk, Igor; Bonafonte Cávez, Antonio; Pascual, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      The goal of the study is to predict acoustic features of expressive speech from semantic vector space representations. Though a lot of successful work was invested in expressiveness analysis and prediction, the results ...
    • Albayzin speech database: design of the phonetic corpus 

      Moreno Bilbao, M. Asunción; Poig, D; Bonafonte Cávez, Antonio; Lleida, E; Llisterri, J; Mariño Acebal, José Bernardo; Nadeu Camprubí, Climent (. EUROSPEECH, 1993)
      Conference report
      Open Access
      This paper describes the phonetic content of Albayzin, a spoken database for Spanish designed for speech recognition purposes. A statistical study of a large sample of spontaneous speech is presented, and the phonetic and ...
    • An efficient algorithm to find the best state sequence in HSMM 

      Bonafonte Cávez, Antonio; Ros Majó, Xavier; Mariño, José B. (1993)
      Conference report
      Open Access
      Hidden Markov Modeling (HMM) techniques have been applied successfully to speech analysis. However, it has been claimed [1-7] that a major weakness of HMM is that the state duration probability density functions (SDPDF) ...
    • Aneto: a tool for prosody analysis of speech 

      Febrer, M; Febrer, A; Bonafonte Cávez, Antonio; Esquerra Llucià, Ignasi (Institut de l'Audiovisual, Universitat Pompeu Fabra, 1998)
      Conference report
      Open Access
      The developed tool provides utilities for prosody analysis and labeling of voice signals. It works under Windows 95 and Windows NT environments and uses the Microsoft Win32 application programming interface (API) for audio ...
    • Apuntes de Senyals i sistemes I 

      Bonafonte Cávez, Antonio; Moreno Bilbao, M. Asunción (Universitat Politècnica de Catalunya, 2009)
      Lecture notes
      Open Access
    • BUCEADOR hybrid TTS for blizzard challenge 2011 

      Sainz, Iñaki; Erro Eslava, Daniel; Navas, Eva; Adell Mercado, Jordi; Bonafonte Cávez, Antonio (2011)
      Conference report
      Open Access
      This paper describes the Text-to-Speech (TTS) systems presented by the Buceador Consortium in the Blizzard Challenge 2011 evaluation campaign. The main system is a concatenative hybrid one that tries to combine the strong ...
    • BUCEADOR, a multi-language search engine for digital libraries 

      Adell Mercado, Jordi; Bonafonte Cávez, Antonio; Cardenal, Antonio; Ruiz Costa-Jussà, Marta; Rodríguez Fonollosa, José Adrián; Moreno Bilbao, M. Asunción; Navas, Eva; Rodríguez Banga, Eduardo (2012)
      Conference lecture
      Open Access
      This paper presents a web-based multimedia search engine built within the Buceador (www.buceador.org) research project. A proof-of-concept tool has been implemented which is able to retrieve information from a digital ...
    • Building synthetic voices in the META-NET framework 

      Garcia Casademont, Emília; Bonafonte Cávez, Antonio; Moreno Bilbao, M. Asunción (2012)
      Conference report
      Restricted access - publisher's policy
      METANET 4 U is a European project aiming at supporting language technology for European languages and multilingualism. It is a project in the META-NET Network of Excellence, a cluster of projects aiming at fostering the ...
    • Building synthetic voices in the METANET framework 

      Garcia Casademont, Emília; Bonafonte Cávez, Antonio; Moreno Bilbao, M. Asunción (2012)
      Conference lecture
      Open Access
      METANET4U is a European project aiming at supporting language technology for European languages and multilingualism. It is a project in the META-NET Network of Excellence, a cluster of projects aiming at fostering the ...
    • Corpus for cyberbullying prevention 

      Moreno Bilbao, M. Asunción; Bonafonte Cávez, Antonio; Jauk, Igor; Tarrés, Laia; Pereira, Victor (International Speech Communication Association (ISCA), 2018)
      Conference report
      Open Access
      Cyberbullying is the use of digital media to harass a person or group of people, through personal attacks, disclosure of confidential or false information, among other means. That is to say, it ...
    • Creating expressive synthetic voices by unsupervised clustering of audiobooks 

      Jauk, Igor; Bonafonte Cávez, Antonio; López Otero, Paula; Docio Fernández, Laura (International Speech Communication Association (ISCA), 2015)
      Conference lecture
      Restricted access - publisher's policy
      In this work we design an approach for automatic feature selection and voice creation for expressive synthesis. Our approach is guided by two main goals: (1) increasing the flexibility of expressive voice creation and (2) ...
    • Deep neural networks for i-vector language identification of short utterances in cars 

      Ghahabi Esfahani, Omid; Bonafonte Cávez, Antonio; Hernando Pericás, Francisco Javier; Moreno Bilbao, M. Asunción (International Speech Communication Association (ISCA), 2016)
      Conference report
      Restricted access - publisher's policy
      This paper is focused on the application of the Language Identification (LID) technology for intelligent vehicles. We cope with short sentences or words spoken in moving cars in four languages: English, Spanish, German, ...
    • Defining analogy for non-native inclusions in Spanish utterances 

      Polyakova, Tatyana; Bonafonte Cávez, Antonio (2010)
      Conference report
      Open Access
      Mass media globalization introduces the challenge of multilingualism into most popular speech applications such as text-tospeech synthesis and automatic speech recognition. In Spain as well as in the other countries, the ...
    • Direct expressive voice training based on semantic selection 

      Jauk, Igor; Bonafonte Cávez, Antonio (International Speech Communication Association (ISCA), 2016)
      Conference report
      Restricted access - publisher's policy
      This work aims at creating expressive voices from audiobooks using semantic selection. First, for each utterance of the audiobook an acoustic feature vector is extracted, including iVectors built on MFCC and on F0 ...
    • Duration modeling with expanded HMM applied to speech recognition 

      Bonafonte Cávez, Antonio; Vidal Manzano, José; Nogueiras Rodríguez, Albino (H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
      Conference lecture
      Open Access
      The occupancy of the HMM states is modeled by means of a Markov chain. A linear estimator is introduced to compute the probabilities of the Markov chain. The distribution function (DF) represents accurately the observed ...
    • Examen Final 

      Bonafonte Cávez, Antonio; Marqués Acosta, Fernando; Ventura Royo, Carles (Universitat Politècnica de Catalunya, 2012-06-10)
      Exam
      Restricted access to the UPC academic community
    • Explicit segmentation of speech using gaussian models 

      Bonafonte Cávez, Antonio; Nogueiras Rodríguez, Albino; Rodriguez-Garrido, A (H. TIMOTHY BRUMMELL, WILLIAM IDSARDI CITATION DELAWARE, NEW CASTLE, DELAWARE, 1996)
      Conference report
      Restricted access - publisher's policy
      The authors investigate an automatic method to segment labeled speech. The method needs an initial estimation of the segmentation which is provided by an alignment based on HMM. Afterwards, the boundaries are refined moving ...
    • Exploring efficient neural architectures for linguistic-acoustic mapping in text-to-speech 

      Pascual de la Puente, Santiago; Serra, Joan; Bonafonte Cávez, Antonio (Multidisciplinary Digital Publishing Institute, 2019-08-17)
      Article
      Open Access
      Conversion from text to speech relies on the accurate mapping from linguistic to acoustic symbol sequences, for which current practice employs recurrent statistical models such as recurrent neural networks. Despite the ...