Publications

J. Tejedor, D.T. Toledano, P. Lopez-Otero, L. Docio-Fernandez, L. Serrano, I. Hernáez, A. Coucheiro-Limeres, J. Ferreiros, J. Olcoz, J. Llombart, J. ALBAYZIN 2016 spoken term detection evaluation: an international open competitive evaluation in Spanish. EURASIP Journal on Audio, Speech, and Music Processing, 2017(1), 22.

D. Tavarez, X. Sarasola, A. Alonso, J. Sanchez, L. Serrano, E. Navas, I. Hernáez. Exploring Fusion Methods and Feature Space for the Classification of Paralinguistic Information Proc. Interspeech 2017

J. Sanchez, I. Hernáez, I. Saratxaga. Use of the harmonic phase in synthetic speech detection. Proc Iberspeech, 2016

D. Erro, Two-band Radial Postfiltering in Cepstral Domain with Application to Speech Synthesis, IEEE Signal Processing Letters (ISSN: 1070-9908), vol. 23(2), pp. 202-206, 2016.

Ibon Saratxaga, Jon Sanchez, Zhizheng Wu, Inma Hernaez, Eva Navas, Synthetic speech detection using phase information Speech Communication 81, 30-41, July 2016

E. Del Blanco, I. Hernáez, E. Navas, X. Sarasola, D. Erro, Bertsokantari: a TTS based singing synthesis system. Proc. Interspeech, 2016

D. Erro, A. Alonso, L. Serrano, J. Sanchez, D. Tavarez, I. Saratxaga, I. Odriozola, E. Navas, X. Sarasola, I. Hernaez. ML Parameter Generation with a Reformulated MGE Training Criterion – Participation in the Voice Conversion Challenge 2016. Proc. Interspeech, 2016

X. Sarasola, E. Navas, D. Tavárez, D. Erro, I. Saratxaga, I. Hernáez, A singing voice database in Basque for statistical singing synthesis of bertsolaritza. Proc. of LREC 2016

Sanchez, J., Saratxaga, I., Hernaez, I., Navas, E., Erro, D., Raitio, T. Toward a Universal Synthetic Speech Spoofing Detection Using Phase Information. IEEE Transactions on Information Forensics and Security, 2015; 10(4), 810 – 820 -1556-6013

Sanchez, J., Saratxaga, I., Hernaez, I., Navas, E., Erro, D. The AHOLAB RPS SSD spoofing challenge 2015 submission. Proceedings of Interspeech, pp. 2042-2046. ISSN: 1990-9770

Erro, D., Hernaez, I., Alonso, A., García-Lorenzo, D., Navas, E., Ye, J., Arzelus, H., Jauk, I., Hy, N. Q., Magariños, C., Pérez-Ramón, R., Sulír, M., Tian, X., Wang, X. Personalized synthetic voices for speaking impaired: website and app. Proc. Interspeech, 2015, pp. 1251-1254. ISSN: 1990-9770

Alonso A., Erro D., Navas E., Hernaez I. Speaker Adaptation using only Vocalic Segments via Frequency Warping. Proceedings of Interspeech 2015, pp. 2764-2768. ISSN: 1990-9770

Navas, E., Hernaez, I., Erro, D., Salaberria, J., Oyharçabal, B., & Padilla, M. Nafar-Lapurtar euskalkiarentzako euskal TTS bat garatzea. Euskalingua 26, pp. 22-27, 2015. ISSN: 1695-7458

Castán, D., Tavarez, D., Lopez-Otero, P., Franco-Pedroso, J., Delgado, H., Navas, E., Docio-Fernández, L., Ramos, D., Serrano, J., Ortega, A., Lleida, E. Albayzín-2014 evaluation: audio segmentation and classification in broadcast news domains. EURASIP Journal on Audio, Speech, and Music Processing, 2015:33. ISSN: 1687-4722.

Erro, D., Alonso, A., Serrano, L., Navas, E., Hernaez, I. Interpretable parametric voice conversion functions based on Gaussian mixture models and constrained transformations. Computer Speech & Language, vol. 30(1), pp. 3-15, 2015. ISSN: 0885-2308

Sanchez, J., Saratxaga, I., Hernaez, I., Navas, E., Erro, D. A Cross-vocoder Study of Speaker Independent Synthetic Speech Detection using Phase Information. In Interspeech 2014, pp. 1663–1667. ISSN: 1990-9770.

Erro, D., Zorila, T.-C., Stylianou, Y. Enhancing the Intelligibility of Statistically Generated Synthetic Speech by Means of Noise-Independent Modifications. IEEE/ACM Transactions on Audio, Speech, and Language Processing, vol. 22(12), pp. 2101-2111, 2014. ISSN: 2329-9290

Tavarez, D., Navas, E., Erro, D., Saratxaga, I., Hernaez, I. New bilingual speech databases for audio diarization. Proceedings of LREC2014, pp. 2666–2670., 2014. ISBN: 978-2-9517408-8-4.

Odriozola, I., Hernaez, I., Torres, M. I., Rodriguez-fuentes, L. J., Penagarikano, M., Navas, E. Basque Speecon-like and Basque SpeechDat MDB-600: speech databases for the development of ASR technology for Basque. Proceedings of LREC 2014, pp. 2658–2665, 2014. ISBN: 978-2-9517408-8-4

G. Degottex, D. Erro. A Uniform Phase Representation for the Harmonic Model in Speech Synthesis Applications. EURASIP Journal on Audio, Speech, and Music Processing, vol. 2014(38), 2014. ISSN: 1687-4722

Tavarez, D., Navas, E., Alonso, A., Erro, D., Saratxaga, I., & Hernaez, I. (2014). Aholab Audio segmentation system for albayzin 2014 evaluation campaign. In IberSPEECH 2014 (pp. 273–282). Las Palmas de Gran Canaria, Spain. ISBN: 978-84-617-2862-6

Degottex, G., Erro, D. A Measure of Phase Randomness for the Harmonic Model in Speech Synthesis. In Interspeech 2014, pp. 1638–1642. ISSN: 1990-9770.

Hernaez, I., Saratxaga, I., Ye, J., Sanchez, J., Erro, D., & Navas, E. (2014). Speech Watermarking Based on Coding of the Harmonic Phase. In Advances in Speech and Language Technologies for Iberian Languages, Lecture Notes in Computer Science, vol. 8854, pp. 259–268. Las Palmas de Gran Canaria, Spain. ISBN: 978-3-319-13622-6.

Alonso, A., Erro, D., Navas, E., & Hernaez, I. (2014). Fine Vocoder Tuning for HMM-Based Speech Synthesis: Effect of the Analysis Window Length. In Advances in Speech and Language Technologies for Iberian Languages, Lecture Notes in Computer Science, vol. 8854, pp. 21–29. Las Palmas de Gran Canaria, Spain. ISBN: 978-3-319-13622-6.

Odriozola, I., Serrano, L., Hernaez, I., & Navas, E. (2014). The AhoSR Automatic Speech Recognition System. In Advances in Speech and Language Technologies for Iberian Languages, Lecture Notes in Computer Science, vol. 8854, pp. 279–288. Las Palmas de Gran Canaria, Spain. ISBN: 978-3-319-13622-6.

Navas, E., Hernaez, I., Erro, D., Salaberria, J., Oyharçabal, B., & Padilla, M. (2014). Developing a Basque TTS for the Navarro-Lapurdian Dialect. In Advances in Speech and Language Technologies for Iberian Languages, Lecture Notes in Computer Science, vol. 8854, pp. 11–20. Las Palmas de Gran Canaria; Spain. ISBN: 978-3-319-13622-6.

D. Erro, I. Sainz, E. Navas, I. Hernaez. Harmonics Plus Noise Model Based Vocoder for Statistical Parametric Speech Synthesis. IEEE Journal of Selected Topics in Signal Processing, 8(2):184-194, 2014. ISSN: 1932-4553.

Leturia, I., Sarasola, K., Arregi, X., Diaz de Ilarraza, A., Navas, E., Sainz, I., del Pozo, A., Baranda, D., Iturraspe, U. The BerbaTek project for Basque: Promoting a less-resourced language via language technology for translation, content management and learning. TC3 Translation: Computation, Corpora, Cognition, vol. 3(1), pp. 119-135. ISSN: 2193-6986.

Erro, D., Navas, E., Hernaez, I. Parametric Voice Conversion Based on Bilinear Frequency Warping Plus Amplitude Scaling. IEEE Transactions on Audio, Speech and Language Processing, vol. 21(3), pp. 556-566, 2013. ISSN: 1558-7916.

D. Erro, A. Alonso, L. Serrano, E. Navas, I. Hernáez. New Method for Rapid Vocal Tract Length Adaptation in HMM-based Speech Synthesis. Proc. of SSW8, pp. 125-128, 2013.

D. Tavarez, E. Navas, D. Erro, I. Saratxaga, I. Hernaez, “Nueva técnica de fusión de clasificadores aplicada a la mejora de la segmentación de audio” (in Spanish), Procesamiento del Lenguaje Natural (ISSN: 1135-5948), vol. 51, pp. 161-168, 2013.

A. Alonso, I. Sainz, D. Erro, E. Navas, I. Hernaez, “Sistema de conversión texto a voz de código abierto para lenguas ibéricas” (in Spanish), Procesamiento del Lenguaje Natural (ISSN: 1135-5948), vol. 51, pp. 169-175, 2013.

Erro, D., Alonso, A., Serrano, L., Navas, E., & Hernáez, I. Towards Physically Interpretable Parametric Voice Conversion Functions. Advances in Nonlinear Speech Processing, LNCS, vol. 7911, pp. 75–82.ISBN: 978-3-642-38846-0.

D. Erro, T.C. Zorila, Y. Stylianou, E. Navas, I. Hernaez. Statistical Synthesizer with Embedded Prosodic and Spectral Modifications to Generate Highly Intelligible Speech in Noise. Proc. Interspeech 2013, pp. 3557-3560, 2013. ISSN: 2308-457X

Igor Leturia, Kepa Sarasola, Xabier Arregi, Arantza Diaz de Ilarraza, Eva Navas, Iñaki Sainz, Arantza del Pozo, Aitor Álvarez, David Baranda, Urtza Iturraspe BerbaTek: euskararako hizkuntza teknologien garapena itzulpengintza, edukien kudeaketa eta irakaskuntza arloetan Euskalingua,vol. 23, pp. 66-76, 2013. ISSN: 1695-7458

Ibon Saratxaga, Inma Hernaeze Fasea ahots-seinalearen eredu harmonikoetan: adierazpidea, prozesaketa eta aplikazioak. Euskalingua,vol. 22, pp. 25-29, 2013. ISSN: 1695-7458

Igor Odriozola, Inma Hernaez, Eva Navas, Jon Sanchez Mezuak egiaztatzeko tresna baten diseinua, bigarren hizkuntzak ikasteko sistemetan inplementatzeko. Euskalingua,vol. 22, pp. 21-24, 2013. ISSN: 1695-7458

David Tavarez, Eva Navas, Daniel Erro and Ibon Saratxaga. Strategies to Improve a Speaker Diarisation Tool. Proceedings of the 8th International Conference on Language Resources and Evaluation (LREC’12), pp. 4117-4121, 2012. ISBN: 978-2-9517408-7-7

Tavarez, D., Navas, E., Erro, D., Saratxaga, I., Hernaez, I. Técnicas de post-procesado de resultados en un sistema de diarización de locutores. Procesamiento del Lenguaje Natural, num. 49, pp. 109-116, 2012. ISSN: 1135-5948

Odriozola, O., Jokisch, O., Hernáez, I., Hoffmann, R. Diseño y desarrollo de un sistema de evaluación automática de la pronunciación para el euskara. Procesamiento del Lenguaje Natural, num. 49, pp. 101-108, 2012. ISSN: 1135-5948

Hernáez, I.; Navas, E.; Odriozola, I.; Sarasola, K.; Diaz de Ilarraza, A.; Leturia, I.; Diaz de Lezana, A.; Oihartzabal, B.; Salaberria, J. The Basque Language in the Digital Age — Euskara Aro Digitalean. META-NET White Paper Series. Georg Rehm and Hans Uszkoreit (Series Editors), Springer, 2012. ISBN: 978-3-642-30795-9.

Daniel Erro, Yannis Stylianou, Eva Navas, Inma Hernaez. Simple Spectral Techniques to Enhance the Intelligibility of Speech using a Harmonic Model. Proceedings of the Listening Talker Workshop, pp. 61, Edinburgh, UK.

Jordi Adell, Antonio Bonafonte, Antonio Cardenal, Marta R. Costa-Jussà, José A. R. Fonollosa, Asunción Moreno, Eva Navas and Eduardo R. Banga. The BUCEADOR multi-language search engine for digital libraries. Proceedings of the 8th International Conference on Language Resources and Evaluation (LREC’12), pp. 1705-1709, 2012. ISBN: 978-2-9517408-7-7

Igor Odriozola, Eva Navas, Inma Hernáez, Iñaki Sainz, Ibon Saratxaga, Jon Sánchez and Daniel Erro. Using an ASR database to design a pronunciation evaluation system in Basque. Proceedings of the 8th International Conference on Language Resources and Evaluation (LREC’12), pp. 4122-4126, 2012. ISBN: 978-2-9517408-7-7

Iñaki Sainz, Daniel Erro, Eva Navas, Inma Hernáez, Jon Sánchez, Ibon Saratxaga and Igor Odriozola. Versatile Speech Databases for High Quality Synthesis for Basque. Proceedings of the 8th International Conference on Language Resources and Evaluation (LREC’12), pp. 3308-3312, 2012. ISBN: 978-2-9517408-7-7

Erro, D., Navas, E., Hernaez, I. Iterative MMSE Estimation of Vocal Tract Length Normalization Factors for Voice Transformation. Proceedings of the 13th Annual Conference of the International Speech Communication Association (INTERSPEECH 2012), pp. 86-89, Portland, 2012. ISSN 1990-9770

Saratxaga, I., Hernaez, I., Pucher, M., Navas, E., Sainz, I. Perceptual Importance of the Phase Related Information in Speech. Proceedings of the 13th Annual Conference of the International Speech Communication Association (INTERSPEECH 2012), pp. 1448-1451, Portland, 2012. ISSN 1990-9770

Erro, D., Stylianou,Y., Navas, E., Hernaez, I. Implementation of Simple Spectral Techniques to Enhance the Intelligibility of Speech using a Harmonic Model. Proceedings of the 13th Annual Conference of the International Speech Communication Association (INTERSPEECH 2012), pp. 639-642, Portland, 2012. ISSN 1990-9770

De Leon, P. L.; Pucher, M.; Yamagishi, J.; Hernaez, I.; Saratxaga, I.; Evaluation of Speaker Verification Security and Detection of HMM-Based Synthetic Speech, Audio, Speech, and Language Processing, IEEE Transactions on , vol.20, no.8, pp.2280-2290, 2012. ISSN: 1558-7916.

Ibon Saratxaga, and Inma Hernaez. Phase in the harmonic models of the speech signal: strategies for representation, processing and applications. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 470-479, 2012. ISBN: 84-616-1535-2

Iñaki Sainz, Daniel Erro, Eva Navas, Inma Hernáez, Jon Sánchez, Ibon Saratxaga. Aholab Speech Synthesizer for Albayzin 2012 Speech Synthesis Evaluation. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 645-652, 2012. ISBN: 84-616-1535-2

Tudor-Catalin Zorila, Daniel Erro, Yannis Stylianou, and Inma Hernáez. Towards a Robust Dynamic Frequency Warping Text-Independent Voice Conversion System. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 143-152. ISBN: 84-616-1535-2

Igor Odriozola, Inma Hernáez, Eva Navas. Design of a message verification tool to be implemented in CALL systems. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 251-259. ISBN: 84-616-1535-2.

José David Pérez, Antonio Bonafonte, Antonio Cardenal, Marta Ruiz, José
A. R. Fonollosa, Asunción Moreno, Eva Navas, Eduardo R. Banga. Search Engine for Multilingual Audiovisual Contents. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 422-430, 2012. ISBN: 84-616-1535-2

David Tavarez, Eva Navas, Daniel Erro, and Ibon Saratxaga. Audio Segmentation System by Aholab for Albayzin 2012 Evaluation Campaign. Proceedings of IberSPEECH 2012 – VII Jornadas en Tecnología del Habla and III Iberian SLTech Workshop, pp. 577-584, 2012. ISBN: 84-616-1535-2.

David Tavarez, Eva Navas, Daniel Erro, Ibon Saratxaga, Inma Hernaez. Emaitzen post-prozesatze teknikak hizlarien diarizazio-sistema baterako. Euskalingua,vol. 21, pp. 43-47, 2012. ISSN: 1695-7458

Iñaki Sainz, Daniel Erro, Eva Navas, Inma Hernáez. TTS ikuspegi hibrido bat modulu akustiko eta prosodikoentzat. Euskalingua, vol. 20, pp. 58-63. ISSN: 1695-7458

Sanchez, J., Saratxaga, I., Hernaez, I., Navas, E., Erro, D., & Raitio, T. (2015). Toward a Universal Synthetic Speech Spoofing Detection Using Phase Information. IEEE Transactions on Information Forensics and Security, 10(4), pp. 810–820. ISSN: 1556-6013.

D. Erro, I. Sainz, E. Navas, I. Hernáez, J. Sánchez, I. Saratxaga, I. Odriozola. Ahots-sintesirako HNM ereduan oinarritutako vocoder hobetua. Euskalingua,vol. 20, pp. 53-57, 2012. ISSN: 1695-7458

Odriozola, I., Jokisch, O., Hernáez, I., Hoffmann, R. “A pronunciation tutoring system for Basque – First development steps”. Proc. of ESSV (Elektronische Sprachsignalverarbeitung), 2012, Cottbus.

D. Erro, I. Sainz, E. Navas, I. Hernaez. Efficient spectral envelope estimation from harmonic speech signals. IET Electronics letters, vol. 48(16), pp. 1019-1021, 2012. ISSN: 0013-5194

Tudor-Cătălin Zorilă, Daniel Erro, and Inma Hernaez. Improving the Quality of Standard GMM-Based Voice Conversion Systems by Considering Physically Motivated Linear Transformations. Communications in Computer and Information Science, vol. 328, pp. 30-39, 2012. ISSN: 1865-0929

Hernaez, I., Saratxaga, I., Sanchez, J., Navas, E., Luengo, I. Use of the Harmonic Phase in Speaker Recognition, Proc. Interspeech, pp. 2757-2760, 2011. ISSN 1990-9772

Erro, D.,Sainz, I., Navas, E., Hernaez, I. Improved HNM-based Vocoder for Statistical Synthesizers, Proc. Interspeech, pp. 1809-1812, 2011. ISSN 1990-9772

Sainz, I., Erro, D., Navas, E., Hernaez, I. A Hybrid TTS Approach for Prosody and Acoustic Modules, Proc. Interspeech, pp. 333-336, 2011. ISSN 1990-9772

Phillip L. De Leon, Inma Hernaez, Ibon Saratxaga, Michael Pucher, Junichi Yamagishi, Detection of synthetic speech for the problem of imposture, Proc. ICASSP, pp. 4844-4847, 2011.

Erro, D., Sainz, I., Navas, E., Hernaez, I. HNM-BASED MFCC+F0 EXTRACTOR APPLIED TO STATISTICAL SPEECH SYNTHESIS. Proc. ICASSP 2011, pp. 4728-4731, 2011. ISBN: 978-1-4577-0537-3

D. Erro, I. Sainz, I. Saratxaga, E. Navas, I. Hernaez, J. Sanchez, I. Odriozola. MFCC+F0 erauzketa eta ahots-uhina berreraikitzea HNM erabiliz: HMM sintesi-sistema batean lortutako aurretiko emaitzak. Euskalingua 2011, vol. 19, pp. 35-39, 2011. ISSN: 1695-7458

I. Odriozola, E. Navas, I. Hernaez, I. Sainz, I. Saratxaga, J. Sanchez, D. Erro. Euskarazko ahoskera ebaluatzeko sistema baten garapena, ASR datu-basearen bidez. Euskalingua 2011, vol. 19, pp. 31-34, 2011. ISSN: 1695-7458

I. Luengo, E. Navas, I. Saratxaga, I. Hernáez, D. Erro. AhoLab taldearen sarrera Albayzin 2010 hizlarien diarizazio erronkarako. Euskalingua 2011,vol. 18, pp. 57-62, 2011. ISSN: 1695-7458

D. Erro, I. Sainz, I. Luengo, I. Odriozola, J. Sánchez, I. Saratxaga, E. Navas, I. Hernáez. HMMetan oinarritutako euskararako testu-ahots bihurketa, HTS erabiliz. Euskalingua 2011, vol. 18, pp. 52-56, 2011. ISSN: 1695-7458

Sainz, I., Erro, D., Navas, E., Adell, J., Bonafonte, A. BUCEADOR hybrid TTS for Blizzard Challenge 2011. Proceedings Blizzard Challenge 2011

J. Fierrez, J. Galbally, J. Ortega-Garcia, M.R. Freire, F. Alonso-Fernandez, D. Ramos, D.T. Toledano, F. Glez-Rguez, J.A. Siguenza, J. Garrido-Salas, E. Anguiano-Rey, G. Gonzalez-de-Rivera, R. Ribalda, M. FAundez, J.A. Ortega, V. Cardeñoso, A. Viloria, C.E. Viavaracho, Q.I. Moro, JJ Igarza, J. Sanchez, I. Hernaez, C. Orrite, F. Martinez, JJ Gracia. BiosecurID: a multimodal biometric database. Pattern Analysis and Applications,Vol. 13(2), pp. 235-246, 2010. ISSN: 1433-7541.

Leturia, I., del Pozo, A., Oyarzun, D., Iturraspe, U., Arregi, X., Sarasola, K., Diaz de Ilarraza, A., Navas, E., Odriozola, I., Sainz, I. Web Communication Protocols for Coordinating the Modules of AnHitz, a Basque-Speaking Virtual 3D Expert on Science and Technology. In Proceedings of Web Services and Processing Pipelines in HLT workshop, pp. 60-67, 17-18 May 2010, Malta.

Sainz, I., Navas, E., Hernáez, I., Bonafonte, A., Campillo, F. TTS Evaluation Campaign with a Common Spanish Database. Proc. of the Seventh International Language Resources and Evaluation (LREC’10), paper 454, pp. 2155-2160, 2010. ISBN: 2-9517408-6-7..

Saratxaga, I., Hernáez, I., Navas, E., Sainz, I., Luengo, I., Sanchez, J., Odriozola, I,. Erro, D. AhoTransf: A Tool for Multiband Excitation Based Speech Analysis and Modification. Proc. of the Seventh International Language Resources and Evaluation (LREC’10), paper 471, pp. 3732-3737, 2010. ISBN: 2-9517408-6-7.

Luengo, I., Navas, E., Odriozola, I., Saratxaga, I., Hernáez, I., Sainz, I., Erro, D. Modified LTSE-VAD Algorithm for Applications Requiring Reduced Silence Frame Misclassification. Proc. of the Seventh International Language Resources and Evaluation (LREC’10), paper 741, pp. 1539-1544, 2010. ISBN: 2-9517408-6-7.

I. Luengo, E. Navas, J. Sanchez, I. Hernáez. Bokalen antzematea fonemen klusterren bidez. Euskalingua vol. 17, pp. 98-104, 2010. ISSN: 1695-7458

M. Farrús, M. Wagner, D. Erro, J. Hernando. Automatic Speaker Recognition as a Measurement of Voice Imitation and Conversion. International Journal of Speech, Language and the Law , vol. 17(1), pp. 119-142, 2010. ISSN: 1748-8885.

Saratxaga, I., Hernáez, I., Odriozola, I., Navas, E., Luengo, I., Erro, D., Using Harmonic Phase Information to Improve ASR Rate, Proc. Interspeech 2010, pp. 1185-1188, Makuhari, Japan, 2010. ISSN 1990-9772

D. Erro, A. Moreno, A. Bonafonte. Voice Conversion based on Weighted Frequency Warping. IEEE Trans. Audio, Speech, and Language Processing Vol. 19, N.5, pp. 922-931, 2010. ISSN: 1558-7916.

D. Erro, A. Moreno, A. Bonafonte. INCA Algorithm for Training Voice Conversion Systems from Nonparallel Corpora. IEEE Trans. Audio, Speech, and Language Processing, Vol. 19, N.5, pp. 944-953, 2010. ISSN: 1558-7916.16.

Erro, D; Navas, E; Hernaez, I; Saratxaga, I. Emotion Conversion based on Prosodic Unit Selection. IEEE Transactions on audio, speech and language processing, vol. 18(5), pp. 974-983, 2010. ISSN: 1558-7916.

Luengo, I., Navas, E., Hernaez, I. Feature Analysis and Evaluation for Automatic Emotion Identification in Speech, IEEE Transactions on Multimedia, vol. 12(6), 2010, pp. 490-501. ISSN: 1520-9210.

Lozano, H., Hernáez, I., Picón, A., Camarena, J., Navas, E. Audio Classification Techniques in Home Environments for Elderly/Dependant People, ICCHP (1), Lecture Notes in Computer Science, vol. 6179, pp. 320-323, 2010. ISBN: 978-3-642-14096-9

I. Luengo, E. Navas. Feature analysis and evaluation for automatic emotion identification in speech. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), pp. 267-270, Vigo, Spain, 2010. ISBN: 978-84-8158-510-0

D. Erro. Intra-lingual and Cross-lingual Voice Conversion using Harmonic plus Stochastic Models. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), pp. 263-266, Vigo, Spain, 2010. ISBN: 978-84-8158-510-0

I. Luengo, E. Navas, I. Saratxaga, I. Hernáez, D. Erro. AhoLab Speaker Diarisation System for Albayzin 2010. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), Vigo, Spain, pp. 393-396, 2010. ISBN: 978-84-8158-510-0

I. Sainz, D. Erro, E. Navas, I. Hernáez, J. Sánchez, I. Saratxaga, I. Odriozola, I. Luengo. Aholab Speech Synthesizers for Albayzin2010. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), Vigo, Spain, pp. 343-347, 2010. ISBN: 978-84-8158-510-0

D. Erro, I. Sainz, I. Luengo, I. Odriozola, J. Sánchez, I. Saratxaga, E. Navas, I. Hernáez. HMM-based Speech Synthesis in Basque Language using HTS. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), pp. 67-70, Vigo, Spain, 2010. ISBN: 978-84-8158-510-0

D. Erro, I. Sainz, I. Saratxaga, E. Navas, I. Hernáez. MFCC+F0 Extraction and Waveform Reconstruction using HNM:Preliminary Results in an HMM-based Synthesizer. Proc. FALA 2010 (VI Jornadas en Tecnología del Habla and II Iberian SLTech Workshop), pp. 29-32, Vigo, Spain, 2010. ISBN: 978-84-8158-510-0

Diaz de Ilarraza, A., Sarasola, K., Hernaez, I., Navas, E., Leturia, I., Arrieta, K., del Pozo, A., iturraspe, U. AnHitz, integración de tecnologías de la lengua dentro de un prototipo de experto virtual en ciencia y tecnología. Procesamiento del Lenguaje Natural, núm. 43, pp. 361-363, 2009. ISSN: 1135-5948

Luengo, I., Navas, E., Sanchez, J., Hernaez I. Detección de vocales mediante modelado de clusters de fonemas. Procesamiento del Lenguaje Natural, núm. 43, pp. 121-128, 2009. ISSN: 1135-5948

Odriozola, I., Navas, E., Sanchez, J., Hernaez, I. Tratamiento léxico del euskara occidental basado en la división de radical y desinencia para reconocimiento de habla dialectal. Procesamiento del Lenguaje Natural, núm. 43, pp. 103-111, 2009. ISSN: 1135-5948

Navas, E., Sainz, I., Sanchez, J., Saratxaga, I., Hernaez, I. Algoritmo de inserción de pausas para una lengua declinada. Procesamiento del Lenguaje Natural, núm. 43, pp. 85-92, 2009. ISSN: 1135-5948

Saratxaga, I., Erro, D., Hernáez, I., Sainz, I., Navas, E. Use of Harmonic Phase Information for Polarity Detection in Speech Signals. Proc. Interspeech, pp. 1075-1078, 2009. ISSN 1990-9772

Luengo, I., Navas, E., Hernaez, I. Combining spectral and prosodic information for emotion recognition in the
Interspeech 2009 Emotion Challenge, Proc. Interspeech, pp. 332-335, 2009. ISSN 1990-9772

Leturia, I., del Pozo, A., Arrieta, K., Iturraspe, U., Sarasola, K., Diaz de Ilarraza, A., Navas, E., Odriozola, I. Development and Evaluation of AnHitz, a Prototype of a Basque-Speaking Virtual 3D Expert on Science and Technology. Proc. International Multiconference on Computer Science and Information Technology, pp. 235-242, 2009. ISSN: 1896-7094; ISBN 978-83-60810-22-4.

Odriozola, I., Navas, E., Sanchez, J., Luengo, I., Saratxaga, I., Sainz, I., Hernaez, I. Mendebaldeko euskararen lexikoaren tratamendua, enbor+hondarki banaketan oinarritua, hizketa dialektalaren ezagutze automatikorako. Euskalingua, vol. 15, pp. 66-72, 2009. ISSN: 1695-7458

I. Saratxaga, I. Hernáez, D. Erro, E. Navas, J. Sánchez. Simple representation of signal phase for harmonic speech models. IET Electronics Letters, Volume 45, Issue 7 , pp. 381-383, 2009. ISSN: 0013-5194.

Sainz, I., Erro, D., Navas, E., Hernáez, I., Saratxaga, I., Luengo, I., Odriozola, I. The AHOLAB Blizzard Challenge 2009 Entry. Proc. Blizzard Challenge 2009 workshop, 2009. (http://festvox.org/blizzard/blizzard2009.html)

Aurrekoetxea , G., Sánchez, J., Odriozola, I. EDAK: A corpus to analyse linguistic variations. In Proceedings of A Survey on Corpus-based Research / Panorama de investigaciones basadas en corpus, (AELINCO Asociación Española de Lingüística de Corpus), pp. 489-503, 2009. ISBN: 978-84-692-2198-3.

Poch M., Cuestas D., Mariño J.B., Méndez F., Sainz I. Arquitectura distribuida para un sistema de traducción del habla sobre la plataforma UIMA. Proc. De las V Jornadas en Tecnología del Habla, pp. 225-228 , Bilbao, 2008. ISBN: 978-84-9860-169-5

Arrieta, K., Diaz de Ilarraza, A., Hernáez, I., Iturraspe, U., Leturia, I., Navas, E., Sarasola, K. AnHitz, development and integration of language, speech and visual technologies for Basque. Proc. de las V Jornadas en Tecnología del Habla, pp. 221-224, Bilbao, 2008. ISBN: 978-84-9860-169-5

Luengo, I., Navas, E., Sainz, I., Saratxaga, I., Sanchez, J., Odriozola, I., Igarza, J., Hernáez, I. Grabación de una Base de datos Bilingüe Euskera/Castellano para Verificación de Locutor. Proc. de las V Jornadas en Tecnología del Habla, pp. 195-198, Bilbao, 2008. ISBN: 978-84-9860-169-5

Sainz, I., Saratxaga, I., Navas, E., Hernáez, I., Sanchez, J., Luengo, I.,
Odriozola, I., de Bilbao, E. Evaluación Subjetiva de una Base de Datos de Habla Emocional
para Euskera. Proc. de las V Jornadas en Tecnología del Habla, pp. 191-194, Bilbao, 2008. ISBN: 978-84-9860-169-5

Sainz, I., Hernáez, I., Navas, E., Sanchez, J., Luengo, I., Saratxaga, I.,
Odriozola, I., de Bilbao, E., Erro, D. Descripción del Conversor de Texto a Voz AhoTTS Presentado a la
Evaluación Albayzin TTS 2008. Proc. de las V Jornadas en Tecnología del Habla, pp. 96-99, Bilbao, 2008. ISBN: 978-84-9860-169-5

Navas, E., Hernáez, I., Sainz, I. Evaluation of automatic break insertion for an agglutinative and inflected language. Speech Communication. Volume 50, Issues 11-12, pp. 888-899, 2008. ISSN: 0167-6393

Luengo, I., Navas, E., Sainz, I., Saratxaga, I., Sanchez, J., Odriozola,
I., Igarza J.J., Hernaez, I. Building a Basque/Spanish bilingual database for speaker verification. Proc. of Workshop Collaboration: interoperability between people in the creation of language resources for less-resourced languages, pp. 23-26, 2008. ISBN: 2-9517408-4-0

Sainz, I., Saratxaga, I., Navas, E., Hernáez, I., Sanchez, J., Luengo, I., Odriozola, I. Subjective Evaluation of an Emotional Speech Database for Basque. Proc. of the Sixth International Language Resources and Evaluation (LREC’08), paper 437, 2008. ISBN: 2-9517408-4-0

Luengo, I., Navas, E., Sainz, I., Saratxaga, I., Sanchez, J., Odriozola, I., Hernaez, I. Text independent speaker identification in multilingual environments. Proc. of the Sixth International Language Resources and Evaluation (LREC’08), paper 461, 2008. ISBN: 2-9517408-4-0

Iker Luengo, Eva Navas, Iñaki Sainz, Ibon Saratxaga, Jon Sanchez, Igor Odriozola,
Inmaculada Hernaez, I. Identificación de locutores en entornos multilingües. Proc. de las IV Jornadas en Reconocimiento Biométrico de Personas, pp. 133-140, Valladolid, 2008. ISBN: 978-84-691-5008-5

Arrieta, K. Leturia, I. Iturraspe, U. de Ilarraza, A.D. Sarasola, K. Hernaez, I. Navas, E. AnHitz, Development and Integration of Language, Speech and Visual Technologies for Basque. IEEE Second International Symposium on Universal Communication (ISUC ’08), pp. 338-343, 2008. ISBN: 978-0-7695-3433-6

Sainz, I., Saratxaga, I., Navas, E., Hernáez, I., Sanchez, J., Luengo, I., Odriozola, I., Madariaga, I. Euskarazko datu base emoziodun baten ebaluaketa subjektiboa. Euskalingua 13, pp. 68-71, 2008. ISSN: 1695-7458

Luengo, I., Navas, E., Sainz, I., Saratxaga, I.,Sanchez, J., Odriozola, I.,
Igarza, J.J., Hernaez, I. Hizlaria egiaztatzeko euskarazko eta gaztelerazko datu-base elebiduna eraikitzen. Euskalingua 12, pp. 107-111, 2008. ISSN: 1695-7458

Sainz, I., Navas, E., Hernaez, I. The AHOLAB Blizzard Challenge 2008 Entry. Proc. of the Blizzard Challenge 2008 workshop, Brisbane, Australia, 2008 (http://festvox.org/blizzard/blizzard2008.html)

I., Odriozola, I., Hernáez, E., Navas. Euskara eta Hizketa Teknologiak. BAT Soziolinguistika Aldizkaria, vol. 66, pp. 123-133, 2008. ISSN: 1130-8435.

Navas, E., Hernáez, I., Luengo, I., Sainz, I., Saratxaga, I., Sanchez, J. Meaningful Parameters in Emotion Characterisation. LNAI 4775, pp. 74-84, 2007. ISSN: 0302-9743o.

Luengo, I., Saratxaga, I., Navas, E., Hernáez, I., Sanchez, J., Sainz, I. Evaluation Of Pitch Detection Algorithms Under Real Conditions. Proc. of 32nd IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 1057-1060, Honolulu, 2007. ISBN: 1-4244-0728-1

Luengo, I., Navas, E., Hernáez, I., Sanchez, J., Saratxaga, I., Sainz, I., Igarza, J., Odriozola, I. Epe laburreko ezaugarri prosodikoen eraginkortasuna hiztuna egiaztatzeko. Euskalingua 11, pp. 95-98, 2007. ISSN: 1695-7458

Saratxaga, I., Luengo, I., Navas, E., Hernáez, I., Sánchez, J., Sainz, I., Madariaga, I. Ahotsaren pitch-aren antzematea baldintza zailetan. Euskalingua, 10, pp. 87-92, 2007. ISSN: 1695-7458

Sanchez, J., Luengo, I., Navas, E., Hernaez, I. Adaptation of the AhoTTS Text to Speech System to PDA Platfoms. Proc. of 11-th International Conference Speech and Computer (SPECOM), pp. 292-296, St. Petersburg, 2006. ISBN: 5-7452-0074-x

Saratxaga, I., Navas, E., Hernáez, I., Luengo, I. Designing and Recording an Emotional Speech Database for Corpus Based Synthesis in Basque. Proc. of fifth international conference on Language Resources and Evaluation (LREC), pp. 2126-2129, Genoa, 2006.
ISBN 2-9517408-2-4

Saratxaga, I., Luengo, I., Navas, E., Hernáez, I., Sánchez, J., Sainz, I. Detección De Pitch En Condiciones Adversas. Proc. of IV Jornadas de Tecnologías del Habla, pp. 13-18, Zaragoza, 2006.
ISBN: 84-96214-82-6

Luengo, I., Navas, E., Hernáez, I., Sánchez, J., Saratxaga, I., Sainz, I. Effectiveness Of Short-Term Prosodic Features For Speaker Verification. Proc. of IV Jornadas de Tecnologías del Habla, pp. 333-336, Zaragoza, 2006.
ISBN: 84-96214-82-6

Luengo, I., Navas, E., Hernáez, I., Sánchez, J., Saratxaga, I., Sainz, I., Igarza, JJ. Eficacia de las características prosódicas a corto plazo en la verificación de locutor, Proc. of Terceras Jornadas de Reconocimiento Biométrico de Personas, pp. 115-121, Sevilla, Nov. 2006. ISBN-13: 978-84-934865-1-8

Navas, E., Hernáez, I., Luengo, I. An Objective and Subjective Study of the Role of Semantics and Prosodic Features in Building Corpora for Emotional TTS. IEEE Transactions on audio, speech and language processing, vol. 14, n. 4, pp. 1117-1127, 2006. ISSN: 1558-7916

Saratxaga, I., Navas, E., Hernáez, I., Sanchez, J. Korpusean oinarritutako sintesirako euskarazko datu base emoziodun baten diseinu eta grabaketa. Euskalingua, 9, pp. 173-178, 2006. ISSN: 1695-7458

Sanchez, J., Navas, E., Saratxaga, I., Hernáez, I. Evaluación del conversor de texto en habla con modelo HNS, y comparación con el modelo MBROLA. Euskalingua, 8, pp. 95-127, 2006. ISSN: 1695-7458

Sanchez, J., Sainz, I., Luengo, I., Navas, E., Hernáez, I. Front-End Para El Control Oral De Aplicaciones En Entorno Windows. Proceedings del XX Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2005), 2005.
ISBN: 84-9705-859-3

Luengo, I., Navas, E., Hernáez, I., Sánchez, J. Reconocimiento automático de emociones utilizando parámetros prosódicos. Procesamiento del Lenguaje Natural, núm. 35, pp. 13-20, 2005.
ISSN: 1135-5948

Navas, E., Hernáez, I., Luengo, I., Sánchez, J., Saratxaga, I. Analysis of the Suitability of Common Corpora for Emotional Speech Modeling in Standard Basque. LNAI 3658, pp. 265-272, 2005.
ISSN: 0302-9743

Luengo, I., Navas, E., Hernáez, I., Sánchez, J. Automatic Emotion Recognition using Prosodic Parameters. Proc. of 9th European Conference on Speech Communication and Technology (Interspeech), pp. 493-496, Lisbon, 2005.
ISSN: 1018-4074

Sanchez, J., Romayor, P., Luengo, I., Navas, E., Hernáez, I. AhoTTS testu ahots bihurgailua PDA sistemetan erabiltzeko moldaketa. Euskalingua, 7, pp. 207-211, 2005. ISSN: 1695-7458

Hernaez, I., Navas, E., Diaz de Ilarraza, A., Saiz, R., Mendoza, N., Madariaga, I. HIZKING21: Gaitasun linguistikoak dituzten sistemetan hizkuntza baliabide eta tresnak barneratzen. Euskalingua, 6, pp. 126-130, 2005. ISSN: 1695-7458

Sainz, I., Navas, E., Sánchez, I., Luengo, I., Hernáez, I. Front-End for the Oral Control of Applications in Windows Environments. Proc. of IEEE Eurocon 2005, pp. 1020-1023, Belgrade, 2005.
ISBN: 1-4244-0050-3

Martín, I., Navas, E., Hernáez, I., Sánchez, J. Sistemas de evaluación subjetiva vía Internet para aplicaciones de tecnologías del habla. Proceedings del XIX Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2004), Barcelona, 2004.
ISBN: 84-688-7736-0

Castelruiz, A., Sánchez, J., Zalbide, X., Navas, E., Gaminde, I. Description and Design of a WEB Accessible Multimedia Archive. Proc. of 12th IEEE Mediterranean Electrotechnical Conference (MELECON), pp. 681-684, Dubrovnik, 2004.
ISBN: 0-7803-8272-2

Navas, E., Castelruiz, A., Luengo, I., Sánchez, J., Hernáez, I. Designing and Recording an Audiovisual Database of Emotional Speech in Basque. Proc. of fourth international conference on Language Resources and Evaluation (LREC), pp. 1387-1390, Lisbon, 2004.
ISBN 2-9517408-1-6

Navas, E., Hernáez, I., Castelruiz, A., Sánchez, J., Luengo, I. Acoustical Analysis of Emotional Speech in Standard Basque for Emotions Recognition LNCS 3287, pp. 386-393, 2004.
ISSN: 0302-9743

Navas, E., Hernáez, I., Castelruiz, A., Luengo, I. Obtaining and Evaluating an Emotional Database for Prosody Modelling in Standard Basque. LNAI 3206, pp. 393-400, 2004.
ISSN: 0302-9743

Navas, E., Hernaez, I., Luengo, I., Sánchez, J. Análisis acústico de una base de datos de habla emocional. Proceedings de las III Jornadas en Tecnología del Habla, pp. 233-236, Valencia, 2004.
ISBN 84-9705-714-7

Hernaez, I., Navas, E., Díaz de Ilarraza, A., Saiz, R., Mendoza, N. HIZKING21: Integrating language engineering resources and tools into systems with linguistic capabilities. Proceedings de las III Jornadas en Tecnología del Habla, pp. 137-140, Valencia, 2004.
ISBN 84-9705-714-7

Martin, I., Navas, E., Hernáez, I., Sánchez, J., Madariaga, I. Hizkuntza teknologietako erabilpenetarako ebaluaketa subjektiborako sistema internet bidez. Euskalingua, 5, pp. 120-123, 2004. ISSN: 1695-7458

Hernáez, I., Luengo, I., Navas, E., Zubizarreta, M., Gaminde, I., Sanchez, J., Madariaga, I. Euskarazko Speech_Dat (II) Datu-basea: Deskribapena eta Lehen Ezagutze Saiakeren Emaitzak. Euskalingua, 4, pp. 246-251, 2004. ISSN: 1695-7458

Sánchez, J., Navas E., Madariaga, I., Castelruiz, A., Zalbide, X., Gaminde, I. BAse de datos multimedia para el euskara. Proceedings del XVIII Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2003), articulo 1814, 2003.

Escudero, D., Cardeñoso, V., Sánchez, J.M., Navas, E., Hernáez, I. Uso de Entonación en Reconocimiento Automático de Locutor:Resultados Preliminares. Proceedings del II Congreso de la Sociedad Española de Acústica Forense, pp. 167-174, 2003.
ISBN: 84-86108-32-2

Navas, E., Hernáez, I., Sánchez, J. Predicting Segmental Durations for Basque Using CARTs. Proc. of 15th International Congress of Phonetic Sciences (ICPhS), pp. 2083-2086, Barcelona, 2003.
ISBN: 1-876346-48-5

Sanchez, J., Luengo, I., Castelruiz, A., Zalbide, X., Navas, E., Hernaez, I. Intonazioa eta Emozioak: Ezagutze automatiko baterantz. Euskalingua, 3, pp. 124-136, 2003. ISSN: 1695-7458

Zalbide, X., Gaminde, I., Hernaez, I., Zubizarreta, M., Navas, E. Euskararako SAMPA kodeaz. Euskalingua, 2, pp. 171-177, 2003. ISSN: 1695-7458

Hernaez, I., Luengo, I., Navas, E., Zubizarreta, M., Gaminde, I., Sanchez, J. The Basque Speech_Dat (II) Database: A Description and First Test Recognition Results. Proc. 8th European Conference on Speech Communication and Technology, pp. 1549-1552, Geneva, 2003.
ISSN: 1018-40-74

Navas, E., Hernaez, I., Sanchez, J.M. Subjective evaluation of synthetic intonation. Proceedings of 2002 IEEE Workshop on Speech Synthesis, pp. 23- 26, 2002.
ISBN: 0-7803-7395-2

Navas, E., Hernáez, I., Ezeiza, N. Assigning phrase breaks using CARTs for Basque TTS, Proc. Speech Prosody 2002, pp. 527-530, Aix-en-Provence, 2002.
ISBN: 2-9518233-0-4

Navas, E., Hernáez, I., Sánchez, J. Modelo de duración para conversión de texto a voz en euskera. Procesamiento del Lenguaje Natural, num. 29, pp. 147-152, 2002.
ISSN: 1135-5948

I. Hernaez, E. Navas, J.M. Sanchez, I. Madariaga, I. Gaminde, X. Zalbide
BIZKAIFON: A sound archive of dialectal varieties of spoken Basque
Proc. of 3th International Conference on Languages Resources and Evaluation (LREC 2002), pp. 865-868, Las Palmas de Gran Canaria, 2002.
ISBN: 2-9517408-0-8

Ortiz, A., Posada, J., Vivanco, K., Tejedor, M.G., Navas, E., Hernáez, I. Avatares Conversacionales 3D en Tiempo Real para su Integración en Interfaces de Usuario y Entornos TV. Proceedings de las II Jornadas en Tecnología del Habla, Granada, 2002.
ISBN: 84-7951-031-5

Navas, E., Hernáez, I., Sánchez, J. Basque Intonation Modelling For Text To Speech Conversion. Proc. of 7th International Conference on Spoken Language Processing (ICSLP), pp. 2409-2412, Denver, 2002.
ISBN: 1-876346-40-X

Navas, E., Hernáez, I., Madariaga, I., Sanchez, J., Ezeiza, N. Esaldi etenaldien ezarpena CART bidez Euskal Testu Ahots Bihurketarako. Euskalingua 1, pp. 91-95, 2002. ISSN: 1695-7458

Hernaez, I., Navas, E., Murugarren, J. L., Etxebarria, B. Description of the AhoTTS system for the Basque language. Proceedings of SSW4-2001, paper 202.

Navas, E., Murugarren, J. L., Blanco, B., Hernáez, I. Reducción de Ruido en un Terminal Fijo de Acceso por Radio. Proceedings del XV Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2000), 2000.

E. Navas, I. Hernáez, A. Armenta, B. Etxebarria, J. Salaberria
Modelling Basque intonation using Fujisaki’s model and CARTs
Proc. of IEE State of the art in speech synthesis: State of the art in speech synthesis digest, 3/1-3/6, Londres, 2000.
ISSN: 0963-3308

Navas, E., Hernáez, I. Modelado de la entonación en euskera utilizando el modelo de fujisaki y árboles de regresión binarios, articulo I-4, 2000.
ISBN: 84-95118-58-0

Etxebarria, B., Hernáez, I., Madariaga, I., Navas, E., Rodríguez, J. C., Gándara, R. Improving quality in a speech synthesizer based on the MBROLA algorithm. Proc. Sixth European Conference on Speech Communication and Technology, pp. 2299-2302, Budapest, 1999.
ISSN: 1018-4074