Alfonso Ortega

Publication Activity (10 Years)

Years Active: 2001-2024
Publications (10 Years): 39

Top Topics

Speaker Recognition

Speaker Verification

Confidence Measures

Top Venues

EURASIP J. Audio Speech Music. Process.

Publications

Antonio Almudévar, Théo Mariotte, Alfonso Ortega, Marie Tahon, Luis Vicente, Antonio Miguel, Eduardo Lleida
Predefined Prototypes for Intra-Class Separation and Disentanglement. CoRR (2024)
Miguel Ángel Pastor Yoldi, Alfonso Ortega, Antonio Miguel, Dayana Ribas
The ViVoLab System for the Odyssey Emotion Recognition Challenge 2024 Evaluation. Odyssey (2024)
Martin Lebourdais, Théo Mariotte, Antonio Almudévar, Marie Tahon, Alfonso Ortega
Explainable by-design Audio Segmentation through Non-Negative Matrix Factorization and Probing. CoRR (2024)
Martin Lebourdais, Pablo Gimeno, Théo Mariotte, Marie Tahon, Alfonso Ortega, Anthony Larcher
3MAS: a multitask, multilabel, multidataset semi-supervised audio segmentation model. Odyssey (2024)
Victoria Mingote, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Class token and knowledge distillation for multi-head self-attention speaker verification systems. Digit. Signal Process. 133 (2023)
Antonio Almudévar, Alfonso Ortega, Luis Vicente, Antonio Miguel, Eduardo Lleida
Variational Classifier for Unsupervised Anomalous Sound Detection under Domain Generalization. INTERSPEECH (2023)
Dayana Ribas, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
On the Problem of Data Availability in Automatic Voice Disorder Detection. HEALTHINF (2023)
Dayana Ribas, Miguel A. Pastor, Antonio Miguel, David Martínez, Alfonso Ortega, Eduardo Lleida
Automatic Voice Disorder Detection Using Self-Supervised Representations. IEEE Access 11 (2023)
Iván López-Espejo, Santi Prieto, Alfonso Ortega, Eduardo Lleida
Improved Vocal Effort Transfer Vector Estimation For Vocal Effort-Robust Speaker Verification. MLSP (2023)
Santi Prieto, Alfonso Ortega, Iván López-Espejo, Eduardo Lleida
Shouted and whispered speech compensation for speaker verification systems. Digit. Signal Process. 127 (2022)
Victoria Mingote, Antonio Miguel, Dayana Ribas, Alfonso Ortega, Eduardo Lleida
aDCF Loss Function for Deep Metric Learning in End-to-End Text-Dependent Speaker Verification Systems. IEEE ACM Trans. Audio Speech Lang. Process. 30 (2022)
Pablo Gimeno, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
A Study on the Use of wav2vec Representations for Multiclass Audio Segmentation. IberSPEECH (2022)
Dayana Ribas, Antonio Miguel, Luis Guillen, Jose Javier Castejon, Juan Antonio Navarro, Alfonso Ortega, Luis Benavente
SONOC Platform for Audio and Speech Analytics in Call Centers. IberSPEECH (2022)
Antonio Miguel, Alfonso Ortega, Eduardo Lleida
ViVoLAB System Description for the S2TC IberSPEECH-RTVE 2022 challenge. IberSPEECH (2022)
Antonio Almudévar, Pascual Sevillano, Luis Vicente, Javier Preciado-Garbayo, Alfonso Ortega
Unsupervised Anomaly Detection Applied to Φ-OTDR. Sensors 22 (17) (2022)
Miguel A. Pastor, Dayana Ribas, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Cross-Corpus Speech Emotion Recognition with HuBERT Self-Supervised Representation. IberSPEECH (2022)
Dayana Ribas, Miguel Angel Pastor Yoldi, Antonio Miguel, David Martínez, Alfonso Ortega, Eduardo Lleida
S3prl-Disorder: Open-Source Voice Disorder Detection System based in the Framework of S3PRL-toolkit. IberSPEECH (2022)
Pablo Gimeno, Victoria Mingote, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Generalizing AUC Optimization to Multiclass Classification for Audio Segmentation With Limited Training Data. IEEE Signal Process. Lett. 28 (2021)
Jorge Llombart, Dayana Ribas, Antonio Miguel, Luis Vicente, Alfonso Ortega, Eduardo Lleida
Progressive loss functions for speech enhancement with deep neural networks. EURASIP J. Audio Speech Music. Process. 2021 (1) (2021)
Carmen Martínez, Spyridon Kontaxis, Mar Posadas-de Miguel, Esther García, Sara Siddi, Jordi Aguiló, Josep Maria Haro, Concepción de la Cámara, Raquel Bailón, Alfonso Ortega
Analysis of Prosodic Features During Cognitive Load in Patients with Depression. IWSDS (2020)
Victoria Mingote, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Optimization of the area under the ROC curve using neural network supervectors for text-dependent speaker verification. Comput. Speech Lang. 63 (2020)
Jorge Llombart, Dayana Ribas, Antonio Miguel, Luis Vicente, Alfonso Ortega, Eduardo Lleida
Speech Enhancement with Wide Residual Networks in Reverberant Environments. CoRR (2019)
Victoria Mingote, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Optimization of the Area Under the ROC Curve using Neural Network Supervectors for Text-Dependent Speaker Verification. CoRR (2019)
Ignacio Viñals, Pablo Gimeno, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Estimation of the Number of Speakers with Variational Bayesian PLDA in the DIHARD Diarization Challenge. INTERSPEECH (2018)
Laura Cabello, Eduardo Lleida, Javier Simón, Antonio Miguel, Alfonso Ortega
Text-to-Pictogram Summarization for Augmentative and Alternative Communication. Proces. del Leng. Natural 61 (2018)
Alfonso Ortega, Eduardo Lleida, Rubén San Segundo, Javier Ferreiros, Lluís F. Hurtado, Emilio Sanchis Arnal, María Inés Torres, Raquel Justo
AMIC: Affective multimedia analytics with inclusive and natural communication. Proces. del Leng. Natural 61 (2018)
Jorge Llombart, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Wide Residual Networks 1D for Automatic Text Punctuation. IberSPEECH (2018)
Antonio Miguel, Jorge Llombart, Alfonso Ortega, Eduardo Lleida
Tied Hidden Factors in Neural Networks for End-to-End Speaker Recognition. CoRR (2018)
Ignacio Viñals, Pablo Gimeno, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
In-domain Adaptation Solutions for the RTVE 2018 Diarization Challenge. IberSPEECH (2018)
Victoria Mingote, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Differentiable Supervector Extraction for Encoding Speaker and Phrase Information in Text Dependent Speaker Verification. IberSPEECH (2018)
Victoria Mingote, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Differentiable Supervector Extraction for Encoding Speaker and Phrase Information in Text Dependent Speaker Verification. CoRR (2018)
Ignacio Viñals, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Phonetic Variability Influence on Short Utterances in Speaker Verification. IberSPEECH (2018)
Pablo Gimeno, Ignacio Viñals, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
A Recurrent Neural Network Approach to Audio Segmentation for Broadcast Domain Data. IberSPEECH (2018)
Ignacio Viñals, Alfonso Ortega, Jesús Antonio Villalba López, Antonio Miguel, Eduardo Lleida
Domain Adaptation of PLDA Models in Broadcast Diarization by Means of Unsupervised Speaker Clustering. INTERSPEECH (2017)
Antonio Miguel, Jorge Llombart, Alfonso Ortega, Eduardo Lleida
Tied Hidden Factors in Neural Networks for End-to-End Speaker Recognition. INTERSPEECH (2017)
Javier Ferreiros, José Manuel Pardo, Lluís-F. Hurtado, Encarna Segarra, Alfonso Ortega, Eduardo Lleida, María Inés Torres, Raquel Justo
ASLP-MULAN: Audio speech and language processing for multimedia analytics. Proces. del Leng. Natural 57 (2016)
Ignacio Viñals, Jesús Antonio Villalba López, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Bottleneck Based Front-End for Diarization Systems. IberSPEECH (2016)
Jesús Antonio Villalba López, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Analysis of speech quality measures for the task of estimating the reliability of speaker verification decisions. Speech Commun. 78 (2016)
Jesús Antonio Villalba López, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Bayesian Networks to Model the Variability of Speaker Verification Scores in Adverse Environments. IEEE ACM Trans. Audio Speech Lang. Process. 24 (12) (2016)
Diego Castán, David Tavarez, Paula Lopez-Otero, Javier Franco-Pedroso, Héctor Delgado, Eva Navas, Laura Docío Fernández, Daniel Ramos, Javier Serrano, Alfonso Ortega, Eduardo Lleida
Albayzín-2014 evaluation: audio segmentation and classification in broadcast news domains. EURASIP J. Audio Speech Music. Process. 2015 (2015)
Jesús Antonio Villalba López, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Variational Bayesian PLDA for speaker diarization in the MGB challenge. ASRU (2015)
Jesús Antonio Villalba López, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
Spoofing detection with DNN and one-class SVM for the ASVspoof 2015 challenge. INTERSPEECH (2015)
David Martínez González, Eduardo Lleida, Phil D. Green, Heidi Christensen, Alfonso Ortega, Antonio Miguel
Intelligibility Assessment and Speech Recognizer Word Accuracy Rate Prediction for Dysarthric Speakers in a Factor Analysis Subspace. ACM Trans. Access. Comput. 6 (3) (2015)
Julia Olcoz, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Confidence Measures in Automatic Speech Recognition Systems for Error Detection in Restricted Domains. IberSPEECH (2014)
Diego Castán, Mario Rodríguez, Alfonso Ortega, Carlos Orrite, Eduardo Lleida
ViVoLab and CVLab - MediaEval 2014: Violent Scenes Detection Affect Task. MediaEval (2014)
Diego Castán, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Audio segmentation-by-classification approach based on factor analysis in broadcast news domain. EURASIP J. Audio Speech Music. Process. 2014 (2014)
José Enrique García Laínez, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Low bit rate compression methods of feature vectors for distributed speech recognition. Speech Commun. 58 (2014)
Antonio Miguel, Jesús Antonio Villalba López, Alfonso Ortega, Eduardo Lleida, Carlos Vaquero
Factor analysis with sampling methods for text dependent speaker recognition. INTERSPEECH (2014)
Diego Castán, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
A Preliminary Study of Acoustic Events Classification with Factor Analysis in Meeting Rooms. IberSPEECH (2014)
Jesús Antonio Villalba López, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
The I3a speaker recognition system for NIST SRE12: post-evaluation analysis. INTERSPEECH (2013)
Emilio Sanchis, Alfonso Ortega, M. Inés Torres, Javier Ferreiros
TIMPANO: Technology for complex Human-Machine conversational interaction with dynamic learning. Proces. del Leng. Natural 51 (2013)
David Martínez González, Dayana Ribas, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
Suprasegmental information modelling for autism disorder spectrum and specific language impairment classification. INTERSPEECH (2013)
Carlos Vaquero, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Quality Assessment for Speaker Diarization and Its Application in Speaker Characterization. IEEE Trans. Speech Audio Process. 21 (4) (2013)
Diego Castán, Alfonso Ortega, Jesús Antonio Villalba López, Antonio Miguel, Eduardo Lleida
Segmentation-by-classification system based on factor analysis. ICASSP (2013)
David Martínez González, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
Prosodic features and formant modeling for an ivector-based language recognition system. ICASSP (2013)
Jesús Antonio Villalba López, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
A new Bayesian network to assess the reliability of speaker verification decisions. INTERSPEECH (2013)
David Martínez González, Eduardo Lleida, Alfonso Ortega, Antonio Miguel, Jesús Antonio Villalba López
Voice Pathology Detection on the Saarbrücken Voice Database with Calibration and Fusion of Scores Using MultiFocal Toolkit. IberSPEECH (2012)
Luis Javier Rodríguez-Fuentes, Mikel Peñagarikano, Amparo Varona, Mireia Díez, Germán Bordel, Alberto Abad, David Martínez González, Jesús Antonio Villalba López, Alfonso Ortega, Eduardo Lleida
The BLZ Submission to the NIST 2011 LRE: Data Collection, System Development and Performance. INTERSPEECH (2012)
Jesús Antonio Villalba López, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
Reliability Estimation of the Speaker Verification Decisions Using Bayesian Networks to Combine Information from Multiple Speech Quality Measures. IberSPEECH (2012)
David Martínez González, Eduardo Lleida, Alfonso Ortega, Antonio Miguel
Score Level versus Audio Level Fusion for Voice Pathology Detection on the Saarbrücken Voice Database. IberSPEECH (2012)
Carlos Vaquero, Alfonso Ortega, Eduardo Lleida
Intra-session variability compensation and a hypothesis generation and selection strategy for speaker segmentation. ICASSP (2011)
Antonio Miguel, Alfonso Ortega, Luis Buera, Eduardo Lleida
Bayesian Networks for Discrete Observation Distributions in Speech Recognition. IEEE Trans. Speech Audio Process. 19 (6) (2011)
Luis Javier Rodríguez, Mikel Peñagarikano, Amparo Varona, Mireia Díez, Germán Bordel, David Martínez González, Jesús Antonio Villalba López, Antonio Miguel, Alfonso Ortega, Eduardo Lleida, Alberto Abad, Oscar Koller, Isabel Trancoso, Paula Lopez-Otero, Laura Docío Fernández, Carmen García-Mateo, Rahim Saeidi, Mehdi Soufifar, Tomi Kinnunen, Torbjørn Svendsen, Pasi Fränti
Multi-site heterogeneous system fusions for the Albayzin 2010 Language Recognition Evaluation. ASRU (2011)
Carlos Vaquero, Alfonso Ortega, Eduardo Lleida
Partitioning of Two-Speaker Conversation Datasets. INTERSPEECH (2011)
Diego Castán, Carlos Vaquero, Alfonso Ortega, David Martínez González, Jesús Antonio Villalba López, Eduardo Lleida
Hierarchical Audio Segmentation with HMM and Factor Analysis in Broadcast News Domain. INTERSPEECH (2011)
David Martínez González, Jesús Antonio Villalba López, Antonio Miguel, Alfonso Ortega, Eduardo Lleida
I3A Language Recognition System for Albayzin 2010 LRE. INTERSPEECH (2011)
José Enrique García Laínez, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Non-linear predictive vector quantization of feature vectors for distributed speech recognition. INTERSPEECH (2010)
Luis Buera, Antonio Miguel, Oscar Saz, Alfonso Ortega, Eduardo Lleida
Unsupervised Data-Driven Feature Vector Normalization With Acoustic Model Adaptation for Robust Speech Recognition. IEEE Trans. Speech Audio Process. 18 (2) (2010)
Carlos Vaquero, Alfonso Ortega, Jesús Antonio Villalba López, Antonio Miguel, Eduardo Lleida
Confidence measures for speaker segmentation and their relation to speaker verification. INTERSPEECH (2010)
Antonio Miguel, Alfonso Ortega, Luis Buera, Eduardo Lleida
Graphical models for discrete hidden Markov models in speech recognition. INTERSPEECH (2009)
Antonio Miguel, Alfonso Ortega, Luis Buera, Eduardo Lleida
Local projections and support vector based feature selection in speech recognition. INTERSPEECH (2009)
Alfonso Ortega, José Enrique García Laínez, Antonio Miguel, Eduardo Lleida
Real-time live broadcast news subtitling system for Spanish. INTERSPEECH (2009)
Luis Buera, Antonio Miguel, Alfonso Ortega, Eduardo Lleida, Richard M. Stern
Unsupervised training scheme with non-stereo data for empirical feature vector compensation. INTERSPEECH (2009)
José Enrique García Laínez, Alfonso Ortega, Antonio Miguel, Eduardo Lleida
Differential vector quantization of feature vectors for distributed speech recognition. INTERSPEECH (2009)
Antonio Miguel, Eduardo Lleida, Richard C. Rose, Luis Buera, Oscar Saz, Alfonso Ortega
Capturing Local Variability for Speaker Normalization in Speech Recognition. IEEE Trans. Speech Audio Process. 16 (3) (2008)
Luis Buera, Antonio Miguel, Oscar Saz, Alfonso Ortega, Eduardo Lleida
Feature vector normalization with combined standard and throat microphones for robust ASR. INTERSPEECH (2008)
Luis Buera, Antonio Miguel, Eduardo Lleida, Oscar Saz, Alfonso Ortega
On the jointly unsupervised feature vector normalization and acoustic model compensation for robust speech recognition. INTERSPEECH (2007)
Luis Buera, Eduardo Lleida, Antonio Miguel, Alfonso Ortega, Oscar Saz
Cepstral Vector Normalization Based on Stereo Data for Robust Speech Recognition. IEEE Trans. Speech Audio Process. 15 (3) (2007)
Luis Buera, Antonio Miguel, Oscar Saz, Eduardo Lleida, Alfonso Ortega
Evaluation of the combined use of MEMLIN and MLLR on the non-native adaptation task of hiwire project database. INTERSPEECH (2007)
Luis Buera, Antonio Miguel, Eduardo Lleida, Oscar Saz, Alfonso Ortega
Robust speech recognition with on-line unsupervised acoustic feature compensation. ASRU (2007)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau, Luis Buera, Antonio Miguel
Stability Control in a Two-Channel Speech Reinforcement System for Vehicles. ICASSP (5) (2006)
Antonio Miguel, Eduardo Lleida, Alfons Juan, Luis Buera, Alfonso Ortega, Oscar Saz
Local transformation models for speech recognition. INTERSPEECH (2006)
Luis Buera, Eduardo Lleida, Juan Arturo Nolazco-Flores, Antonio Miguel, Alfonso Ortega
Time-dependent cross-probability model for multi-environment model based LInear normalization. INTERSPEECH (2006)
Oscar Saz, Antonio Miguel, Eduardo Lleida, Alfonso Ortega, Luis Buera
Study of time and frequency variability in pathological speech and error reduction methods for automatic speech recognition. INTERSPEECH (2006)
Antonio Miguel, Eduardo Lleida, Richard C. Rose, Luis Buera, Alfonso Ortega
Augmented state space acoustic decoding for modeling local variability in speech. INTERSPEECH (2005)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau
Speech Reinforcement System for Car Cabin Communications. IEEE Trans. Speech Audio Process. 13 (5-2) (2005)
Paloma Garcia Ducar, Alfonso Ortega, Jesus de Mingo, Antonio Valdovinos
Nonlinear distortion cancellation using LINC transmitters in OFDM systems. IEEE Trans. Broadcast. 51 (1) (2005)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau, Luis Buera, Antonio Miguel
Acoustic feedback cancellation in speech reinforcement systems for vehicles. INTERSPEECH (2005)
Luis Buera, Eduardo Lleida, Antonio Miguel, Alfonso Ortega
Robust speech recognition in cars using phoneme dependent multi-environment linear normalization. INTERSPEECH (2005)
Paloma Garcia Ducar, Jesus de Mingo, Antonio Valdovinos, Alfonso Ortega
An adaptive digital method of imbalances cancellation in LINC transmitters. IEEE Trans. Veh. Technol. 54 (3) (2005)
Paloma Garcia Ducar, Alfonso Ortega, Jesus de Mingo, Antonio Valdovinos
Nonlinear distortion cancellation in OFDM systems using an adaptive LINC structure. PIMRC (2004)
Luis Buera, Eduardo Lleida, Antonio Miguel, Alfonso Ortega
Multi-environment models based linear normalization for speech recognition in car conditions. ICASSP (1) (2004)
Alfonso Ortega, Federico Sukno, Eduardo Lleida, Alejandro F. Frangi, Antonio Miguel, Luis Buera, Ernesto Zacur
AV@CAR: A Spanish Multichannel Multimodal Corpus for In-Vehicle Automatic Audio-Visual Speech Recognition. LREC (2004)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau
Residual echo power estimation for speech reinforcement systems in vehicles. INTERSPEECH (2003)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau, Fernando Gallego
Cabin car communication system to improve communications inside a car. ICASSP (2002)
Alfonso Ortega, Eduardo Lleida, Enrique Masgrau
DSP to improve oral communications inside vehicles. EUSIPCO (2002)
Eduardo Lleida, Enrique Masgrau, Alfonso Ortega
Acoustic echo control and noise reduction for cabin car communication. INTERSPEECH (2001)