Recent Publications

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More Publications

(2021). A computer-based tool for the assessment of voice quality through visual analogue scales: VAS-Simplified Vocal Profile Analysis. Journal of Voice, Vol. 35, Issue 3, pp. 497.e9-497.e21.


(2021). International survey on voice quality: Forensic practitioners versus voice therapists. Estudios de Fonética Experimental, Vol. XXX, pp. 9-34.


(2019). The use of the Vocal Profile Analysis for speaker characterization: Methodological proposals. Journal of the International Phonetic Association, Vol. 49, Issue 3, pp. 353-380.


(2019). Sistema multiparamétrico para la comparación forense de hablantes. Estudios de Fonética Experimental, Vol. 28, pp. 13-45.


Conference and Invited Talks

More Talks

A preliminary approach to the acoustic-perceptual characterization of dysarthria
Sep 6, 2021
How many people knock on the table when talking: An investigation into speakers' individual differences in hand-tapping behavior
Aug 24, 2021
Panorama de la fonética forense actual
Jul 3, 2021

Previous positions

August 2018 – February 2020
Geneva, Switzerland

Linguistic consultant & phonetician

DefinedCrowd Corp.

I collaborated in several projects, mainly aimed at improving the quality of the Vocalizer TTS product of Nuance Communications Inc., providing verified phonetic transcriptions of music and news items, researching the pronunciation of new words and correcting transcriptions for words that failed the automatic-system checks and manual quality checks.

Responsibilities included:

  • Phonetic transcription
  • Research on pronunciation
  • Validation of recorded calls
  • Translation EN>ES
  • Sentence verification for AI system training
  • PoS tagging & other NLP tasks

Main skills:

  • Expert knowledge of phonetic alphabets (IPA, SAMPA and X-SAMPA)
  • Ability to familiarize with in-house user guides and language-specific transcription conventions

May 2018 – February 2020
Taiyuan, China

Research Associate

Department of Criminal Science & Technology, Shanxi Police College

Project: Research on Key Technologies for Forensic Speaker Comparison in Mandarin and English
May 2015 – September 2017
York, UK

Postdoctoral Fellow

Department of Language & Linguistic Science, University of York

Responsibilities included:

  • Annotation and review of large British English speech corpus
  • Assessment of forensic system performance
  • Voice quality perceptual evaluation of 100 speakers
  • Led the voice quality research line: method reliability and validity
  • Clinical and speech processing tools

January 2010 – December 2014
Madrid, Spain

PhD Student

Laboratorio de Fonética (CSIC)

Doctor Europaeus - Thesis: “Forensic speaker comparison of Spanish twins and non-twin siblings: A phonetic-acoustic analysis of formant trajectories in vocalic sequences, glottal source parameters and cepstral characteristics”

Achievements: - Largest twin data collection to date in Spanish (54 subjects, 108 hours). - Developed strong managerial and statistical skills. - Self-managed with minimal direction: responsible for all the logistics regarding equipment, participant identification and performing the data collection. - Tested different approaches to speaker ID: acoustic and semi-automatic analyses (ASR system output evaluation).

Main skills: - Strong analytical skills - Attention to detail - Excellent written communication skills - Ability to grasp technical concepts (collaboration with engineers and software developers: co-authors in my main publications) - Hands-on testing of several in-house tools (Biometrics software); monitored debugging process results - Knowledge of curve fitting methods and use of Bayesian data analysis.

January 2009 – July 2009
Madrid, Spain


Eurydice (Spanish unit), Ministry of Education, Spain

Translator (EN>ES; FR>ES) of educational publications, and researcher on European and Spanish education.
October 2007 – April 2008
Valladolid, Spain

Teacher of Spanish as a Foreign Language

La Casa del Español

Teacher of Spanish language, literature and culture in one-to-one classes, mainly to English-speaking adults aged 18-40 of different academic and professional backgrounds.






Audio recording and editing

Phonetic transcription


Challenging Forensic Science: How Science Should Speak to Court


School of Criminal Justice, University of Lausanne (Switzerland)
May 2018

Acreditación de la ANECA para la figura de Profesor Contratado Doctor y Profesor de Universidad Privada

Agencia Nacional de Evaluación de la Calidad y Acreditación

Favourable lecturer report issued by the National Agency for Quality Assessment and Accreditation of Spain:
May 2018

Acreditación de la ANECA para la figura de Profesor Ayudante Doctor

Agencia Nacional de Evaluación de la Calidad y Acreditación

Favourable lecturer report issued by the National Agency for Quality Assessment and Accreditation of Spain:


  • Dpto. Lengua Española y Lingüística General
    Facultad de Filología
    Universidad Nacional de Educación a Distancia (UNED)
    C/ Senda del Rey 7, 28040, Madrid, España
  • Miércoles 10:00 - 14:00