63147 20171109140606.0 doi 10.1186/s13636-014-0034-5 sideral 89130 ART-2014-89130 eng Castán, D. Audio segmentation-by-classification approach based on factor analysis in broadcast news domain 2014 Access copy available to the general public Unrestricted This paper studies a novel audio segmentation-by-classification approach based on factor analysis. The proposed technique compensates the within-class variability by using class-dependent factor loading matrices and obtains the scores by computing the log-likelihood ratio for the class model to a non-class model over fixed-length windows. Afterwards, these scores are smoothed to yield longer contiguous segments of the same class by means of different back-end systems. Unlike previous solutions, our proposal does not make use of specific acoustic features and does not need a hierarchical structure. The proposed method is applied to segment and classify audios coming from TV shows into five different acoustic classes: speech, music, speech with music, speech with noise, and others. The technique is compared to a hierarchical system with specific acoustic features achieving a significant error reduction. info:eu-repo/grantAgreement/ES/MINECO/TIN2011-28169-C05-02 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.386 2014 ENGINEERING, ELECTRICAL & ELECTRONIC 213 / 247 = 0.862 2014 Q4 T3 ACOUSTICS 28 / 30 = 0.933 2014 Q4 T3 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion (orcid)0000-0002-3886-7748 Ortega, A. Universidad de Zaragoza (orcid)0000-0001-5803-4316 Miguel, A. Universidad de Zaragoza (orcid)0000-0001-9137-4013 Lleida, E. Universidad de Zaragoza 5008 800 Universidad de Zaragoza Departamento de Ingeniería Electrónica y Comunicaciones Teoría de la Señal y Comunicaciones 2014, 1 (2014), 1-13 EURASIP j. audio, speech music. process. EURASIP JOURNAL ON AUDIO SPEECH AND MUSIC PROCESSING 1687-4714 1289762 http://zaguan.unizar.es/record/63147/files/texto_completo.pdf Versión publicada 107219 http://zaguan.unizar.es/record/63147/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:63147 articulos driver 2017-11-09-11:57:42 ARTICLE