Browsing by Author "Hernando, Javier"

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  • Audio, video and multimodal person identification in a smart room
    Luque, Jordi; Morros, R.; Garde, I.; Anguita, Jan; Farrús, Mireia; Macho, D.; Marqués López, Fernando; Martínez, C.; Vilaplana, Verónica; Hernando, Javier (Springer, 2007)
    In this paper, we address the modality integration issue on the example of a smart room environment aiming at enabling person identification by combining speech and 2D face images. First we introduce the monomodal audio ...
  • Automatic speaker recognition as a measurement of voice imitation and conversion
    Farrús, Mireia; Wagner, Michael; Erro, Daniel; Hernando, Javier (Equinox Publishing, 2010)
    Voices can be deliberately disguised by means of human imitation or voice conversion. The question arises as to what extent they can be modified by using either of both methods. In the current paper, a set of speaker ...
  • Dialect imitations in speaker recognition
    Farrús, Mireia; Eriksson, Erik; Sullivan, Kirk P. H.; Hernando, Javier (Documenta Universitaria, 2007)
    Voice imitation and disguise are possible threats to the performance of a speaker recognition system and to the accuracy of earwitness descriptions. One common disguise is the modification of the own dialect or accent. ...
  • Effect of 1-year lifestyle intervention with energy-reduced Mediterranean diet and physical activity promotion on the gut metabolome and microbiota: a randomized clinical trial
    García-Gavilán, Jesús Francisco; Fitó Colomer, Montserrat; Hernando, Javier; Salas Salvadó, Jordi (Elsevier, 2024)
    Background: The health benefits of the Mediterranean diet (MedDiet) have been linked to the presence of beneficial gut microbes and related metabolites. However, its impact on the fecal metabolome remains poorly understood. ...
  • Fusión de sistemas de reconocimiento basados en características de alto y bajo nivel
    Farrús, Mireia; Anguita, Jan; Hernando, Javier; Cerdà, Ramon (Dirección Xeral de Creación e Difusión Cultural, 2007)
    Los sistemas automáticos de reconocimiento de locutor más utilizados recientemente están basados en características acústicas de bajo nivel, como las magnitudes espectrales, las frecuencias de los formantes, etc. Sin ...
  • Histogram equalization in SVM multimodal person verification
    Farrús, Mireia; Ejarque, Pascual; Temko, Andrey; Hernando, Javier (Springer, 2007)
    It has been shown that prosody helps to improve voice spectrum based speaker recognition systems. Therefore, prosodic features can also be used in multimodal person verification in order to achieve better results. In this ...
  • How vulnerable are prosodic features to professional imitators?
    Farrús, Mireia; Wagner, Michael; Anguita, Jan; Hernando, Javier (International Speech Communication Association (ISCA), 2008)
    Voice imitation is one of the potential threats to security systems that use automatic speaker recognition. Since prosodic features have been considered for state-of-the-art recognition systems in recent years, the question ...
  • Jitter and shimmer measurements for speaker recognition
    Farrús, Mireia; Hernando, Javier; Ejarque, Pascual (International Speech Communication Association (ISCA), 2007)
    Jitter and shimmer are measures of the cycle-to-cycle variations of fundamental frequency and amplitude, respectively, which have been largely used for the description of pathological voice quality. Since they characterise ...
  • Multimodal person identification in a smart room
    Farrús, Mireia; Luque, Jordi; Morros, R.; Anguita, Jan; Macho, D.; Marqués, Marta; Martínez, C.; Vilaplana, Verónica; Hernando, Javier (Universidad de Zaragoza, 2006)
    In this paper we present a person identification system based on a combination of acoustic features and 2D face images. We address the modality integration issue on the example of a smart room environment. In order to ...
  • On the fusion of prosody, voice spectrum and face features for multimodal person verification
    Farrús, Mireia; Garde, Ainara; Ejarque, Pascual; Luque, Jordi; Hernando, Javier (International Speech Communication Association (ISCA), 2006)
    Comunicació presentada a: 9th International Conference on Spoken Language Processing; 17-21 de setembre de 2006 a Pittsburgh, Estats Units d'Amèrica
  • Person verification by fusion of prosodic, voice spectral and facial parameters
    Hernando, Javier; Farrús, Mireia; Ejarque, Pascual; Garde, Ainara; Luque, Jordi (INSTICC Press, 2006)
    Prosodic information can be used successfully for automatic speaker recognition, although most of the speaker recognition systems use only short-term spectral features as voice information. In this work, prosody information ...
  • Propuesta de experimento sobre la noción de campo de dispersión fonemática
    Cerdà, Ramon; Farrús, Mireia; Hernando, Javier; Veyrat Rigat, Montserrat (Dirección Xeral de Creación e Difusión Cultural, 2007)
    La presente comunicación no ofrece todavía resultados de ningún experimento ya ejecutado, sino, com su título indica, una serie de comentarios en torno a la noción de "campo de dispersión fonemática" (o "fonológica") o ...
  • Robustness of prosodic features to voice imitation
    Farrús, Mireia; Wagner, Michael; Anguita, Jan; Hernando, Javier (International Speech Communication Association (ISCA), 2008)
    Prosody plays an important role in the human recognition process; therefore, prosodic elements are normally used by impersonators aiming to resemble someone else. Since such voice imitation is one of the potential threats ...
  • Segmentació de locutor per a la indexació automàtica de bases de dades multimèdia en català
    Anguera Miró, Xavier, 1978-; Farrús, Mireia; Hernando, Javier (2004)
    L'evolució de la societat de la informació ha esdevingut un incessant increment de continguts audiovisuals que s’emeten constantment en cadenes de televisió i emissores de radio locals i nacionals en llengua catalana. ...
  • Els sistemes de reconeixement de veu i traducció automàtica en català: present i futur
    Farrús, Mireia; Anguita, Jan; Anguera Miró, Xavier, 1978-; Crego, Josep Maria; de Gispert, A.; Hernando, Javier; Nadeu Camprubí, Climent (2004)
    La visió actual de la societat de la informació gira fonamentalment al voltant de la llengua escrita. No obstant, és evident que la forma més natural i espontània de comunicació entre els éssers humans és la parla, i no ...
  • Speaker recognition robustness to voice conversion
    Farrús, Mireia; Erro, Daniel; Hernando, Javier (Universidad de Valladolid, 2008)
    Security systems relying on voice identification can be threatened by human voice imitation or synthetic voices. As voice conversion can be seen as a sort of voice imitation, this paper analyses the performance of an ...
  • Towards large scale multimedia indexing: a case study on person discovery in broadcast news
    Le, Nam; Bredin, Hervé; Sargent, Gabriel; India, Miquel; López Otero, Paula; Barras, Claude; Guinaudeau, Camille; Gravier, Guillaume; Barbosa da Fonseca, Gabriel; Lyon Freire, Izabela; Patrocínio, Zenilton; Guimarães, Silvio Jamil F.; Martí Juan, Gerard; Morros, Josep Ramon; Hernando, Javier; Docio Fernández, Laura; García Mateo, Carmen; Meignier, Sylvain; Odobez, Jean-Marc (ACM Association for Computer Machinery, 2017)
    The rapid growth of multimedia databases and the human interest in their peers make indices representing the location and identity of people in audio-visual documents essential for searching archives. Person discovery in ...
  • Using jitter and shimmer in speaker verification
    Farrús, Mireia; Hernando, Javier (Institution of Engineering and Technology (IET), 2009)
    Jitter and shimmer are measures of the fundamental frequency and amplitude cycle-to-cycle variations, respectively. Both features have been largely used for the description of pathological voices, and since they characterise ...

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