Dr Heidi Christensen

PhD

Department of Computer Science

Senior Lecturer

Member of the Speech and Hearing (SpandH) research group

Heidi Christensen profile photo
heidi.christensen@sheffield.ac.uk
+44 114 222 1950

Full contact details

Dr Heidi Christensen
Department of Computer Science
Regent Court (DCS)
211 Portobello
Sheffield
S1 4DP
Profile

Dr Heidi Christensen is a lecturer in Computer Science and a member of the Centre for Assistive Technology and Connected Healthcare (CATCH). She has a PhD degree from Aalborg University Denmark from 2002.

She joined the Speech and Hearing Group and the University of Sheffield in 2000 and has worked on numerous European and UK funded project. Dr Christensen is active in the Faculty of Engineering's work on ensuring more women in STEM subject; she recently featured on the university's Wall of Women.

Research interests

Dr Christensen’s research interests mainly concern clinical application of speech technology, spoken language processing and binaural machine listening.

Publications

Journal articles

Conference proceedings papers

  • Xiong F, Barker J, Yue Z & Christensen H (2020) Source Domain Data Selection for Improved Transfer Learning Targeting Dysarthric Speech Recognition. ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 4 May 2020 - 8 May 2020. View this article in WRRO RIS download Bibtex download
  • Yue Z, Xiong F, Christensen H & Barker J (2020) Exploring Appropriate Acoustic and Language Modelling Choices for Continuous Dysarthric Speech Recognition. ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 4 May 2020 - 8 May 2020. View this article in WRRO RIS download Bibtex download
  • Xiong F, Barker J & Christensen H (2019) Phonetic Analysis of Dysarthric Speech Tempo and Applications to Robust Personalised Dysarthric Speech Recognition. ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 12 May 2019 - 17 May 2019. RIS download Bibtex download
  • Mirheidari B, Blackburn D, OrMalley R, Walker T, Venneri A, Reuber M & Christensen H (2019) Computational Cognitive Assessment: Investigating the Use of an Intelligent Virtual Agent for the Detection of Early Signs of Dementia. ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 12 May 2019 - 17 May 2019. RIS download Bibtex download
  • AlSaleh MMS, Moore R, Christensen H & Arvaneh M (2019) Examining Temporal Variations in Recognizing Unspoken Words using EEG Signals. 2018 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 7 October 2018 - 10 October 2018. View this article in WRRO RIS download Bibtex download
  • AlSaleh M, Moore R, Christensen H & Arvaneh M (2018) Discriminating between Imagined Speech and Non-Speech Tasks using EEG. 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) (pp 1952-1955), 18 July 2018 - 21 July 2018. View this article in WRRO RIS download Bibtex download
  • Coy A, Green P, Cunningham S, Christensen H, Atria JJ, Rudzicz F, Malavasi M & Desideri L (2018) Embedding speech technology into intelligent tutoring systems using the CloudCAST speech technology platform. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 10858 LNCS (pp 421-424) RIS download Bibtex download
  • Al-Hameed S, Benaissa M & Christensen H (2017) Detecting and Predicting Alzheimer's Disease Severity in Longitudinal Acoustic Data. Proceedings of the International Conference on Bioinformatics Research and Applications 2017 - ICBRA 2017, 8 December 2017 - 10 December 2017. RIS download Bibtex download
  • Blackburn D, Reuber M, Christensen H, Mayer I, Rutten C, Venneri A, chirs E & Mirheidari B (2017) An avatar to screen for cognitive impairment. Journal of the Neurological Sciences, Vol. 381 (pp 319-319) RIS download Bibtex download
  • Mirheidari B, Blackburn DJ, Harkness K, Walker T, Venneri A, Reuber M & Christensen H (2017) An Avatar-based system for identifying individuals likely to develop dementia. Interspeech 2017 (pp 3147-3151) View this article in WRRO RIS download Bibtex download
  • Cernak M, Nöth E, Rudzicz F, Christensen H, Orozco-Arroyave JR, Arora R, Bocklet T, Chinaei H, Hannink J, Nidadavolu PS , Vasquez JC et al (2017) On the impact of non-modal phonation on phonological features. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (pp 5090-5094) View this article in WRRO RIS download Bibtex download
  • Vasquez-Correa JC, Orozco-Arroyave JR, Arora R, Noth E, Dehak N, Christensen H, Rudzicz F, Bocklet T, Cernak M, Chinaei H , Hannink J et al (2017) Multi-view representation learning via gcca for multimodal analysis of Parkinson's disease. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (pp 2966-2970) View this article in WRRO RIS download Bibtex download
  • Cunningham S, Green P, Christensen H, Atria JJ, Coy A, Malavasi M, Desideri L & Rudzicz F (2017) Cloud-Based Speech Technology for Assistive Technology Applications (CloudCAST). Studies in Health Technology and Informatics, Vol. 242 (pp 322-329) View this article in WRRO RIS download Bibtex download
  • Malavasi M, Turri E, Motolese MR, Marxer R, Farwer J, Christensen H, Desideri L, Tamburini F & Green P (2017) An Innovative Speech-Based Interface to Control AAL and IoT Solutions to Help People with Speech and Motor Disability (pp 269-278) RIS download Bibtex download
  • AlSaleh MM, Arvaneh M, Christensen H & Moore RK (2016) Brain-computer interface technology for speech recognition: A review. 2016 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA), 13 December 2016 - 16 December 2016. RIS download Bibtex download
  • Mirheidari B, Blackburn D, Reuber M, Walker T & Christensen H (2016) Diagnosing people with dementia using automatic conversation analysis. Proceedings of Interspeech 2016 (pp 1220-1224) View this article in WRRO RIS download Bibtex download
  • Nicolao M, Christensen H, Cunningham S, Green P & Hain T (2016) A framework for collecting realistic recordings of dysarthric speech - The homeService corpus. Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016 (pp 1993-1997) View this article in WRRO RIS download Bibtex download
  • Casanueva I, Hain T, Christensen H, Marxer R & Green P (2015) Knowledge transfer between speakers for personalised dialogue management. Proceedings of the 16th Annual Meeting of the Special Interest Group on Discourse and Dialogue, September 2015 - September 2015. RIS download Bibtex download
  • Green P, Marxer R, Cunningham S, Christensen H, Rudzicz F, Yancheva M, Coy A, Malavasi M & Desideri L (2015) Remote Speech Technology for Speech Professionals - the CloudCAST initiative. Proceedings of SLPAT 2015: 6th Workshop on Speech and Language Processing for Assistive Technologies, September 2015 - September 2015. RIS download Bibtex download
  • Christensen H, Nicolao M, Cunningham S, Green P, Deena S & Hain T (2015) Speech-enabled environmental control in an AAL setting for people with speech disorders: a case study. IET International Conference on Technologies for Active and Assisted Living (TechAAL) RIS download Bibtex download
  • Christensen H, Casanueva I, Cunningham S, Green P & Hain T (2014) Automatic selection of speakers for improved acoustic modelling: recognition of disordered speech with sparse data. 2014 IEEE Spoken Language Technology Workshop (SLT), 7 December 2014 - 10 December 2014. RIS download Bibtex download
  • Casanueva I, Christensen H, Hain T & Green P (2014) Adaptive speech recognition and dialogue management for users with speech disorders. Proceedings of Interspeech’14 RIS download Bibtex download
  • Christensen H, Green P & Hain T (2013) Learning speaker-specific pronunciations of disordered speech. 14TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2013), VOLS 1-5 (pp 1158-1162) RIS download Bibtex download
  • Christensen H, Aniol MB, Bell P, Green P, Hain T, King S & Swietojanski P (2013) Combining in-domain and out-of-domain speech data for automatic recognition of disordered speech. 14TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2013), VOLS 1-5 (pp 3609-3612) RIS download Bibtex download
  • Martinez D, Green P & Christensen H (2013) Dysarthria Intelligibility Assessment in a Factor Analysis Total Variability Space. 14TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION (INTERSPEECH 2013), VOLS 1-5 (pp 2132-2136) RIS download Bibtex download
  • González DM, Green P & Christensen H (2013) Dysarthria Intelligibility Assessment in a Factor Analysis Total Variability Space. Interspeech’13 RIS download Bibtex download
  • Christensen H, Cunningham S, Green P & Hain T (2013) homeService: Voice-enabled assistive technology in the home using cloud-based automatic speech recognition. 4th Workshop on Speech and Language Processing for Assistive Technologies (SLPAT) RIS download Bibtex download
  • Christensen H, Green P & Hain T (2013) Learning speaker-specific pronunciations of disordered speech. Interspeech’13 RIS download Bibtex download
  • Christensen H, Aniol MB, Bell P, Green P, Hain T, King S & Swietojanski P (2013) Combining in-domain and out-of-domain speech data for automatic recognition of disordered speech. Interspeech’13 RIS download Bibtex download
  • Fox C, Christensen H & Hain T (2012) Studio report: Linux audio for multi-speaker natural speech technology.. Proc. Linux Audio Conference RIS download Bibtex download
  • Christensen H, Siddharth S, Neill PO, Clarke Z, Judge S, Cunningham S & Hawley M (2012) SPECS - an embedded platform, speech-driven environmental control system evaluated in a virtuous circle framework. In proc. Workshop on Innovation and Applications in Speech Technology RIS download Bibtex download
  • Christensen H, Cunningham S, Fox C, Green P & Hain T (2012) A comparative study of adaptive, automatic recognition of disordered speech. 13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012, Vol. 2 (pp 1774-1777) RIS download Bibtex download
  • Ma N, Barker J, Christensen H & Green P (2011) Recent advances in fragment-based speech recognition in reverberant multisource environments.. Proceedings of ISCA Workshop on Machine Listening in Multisource Environments (pp 68-73) RIS download Bibtex download
  • Ma N, Barker J, Christensen H & Green P (2011) Binaural cues for fragment-based speech recognition in reverberant multisource environments. Proceedings of INTERSPEECH 2011 (pp 1657-1660) RIS download Bibtex download
  • Ma N, Barker J, Christensen H & Green P (2011) Incorporating localisation cues in a fragment decoding framework for distant binaural speech recognition.. IEEE Joint Workshop on Hands-Free Speech Communication and Microphone Arrays (HSCMA’11) (pp 207-212) RIS download Bibtex download
  • Ma N, Barker J, Christensen H & Green P (2011) Binaural cues for fragment-based speech recognition in reverberant multisource environments. Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH (pp 1657-1660) RIS download Bibtex download
  • Ma N, Barker J, Christensen H & Green P (2010) Distant microphone speech recognition in a noisy indoor environment: combining soft missing data and speech fragment decoding.. ISCA Tutorial and Research Workshop on Statistical And Perceptual Audition RIS download Bibtex download
  • Christensen H & Barker J (2010) Speaker turn tracking with mobile microphones: Combining location and pitch information. European Signal Processing Conference (pp 954-958) RIS download Bibtex download
  • Christensen H, Barker J, Ma N & Green P (2010) The CHiME corpus: A resource and a challenge for computational hearing in multisource environments. Proceedings of the 11th Annual Conference of the International Speech Communication Association, INTERSPEECH 2010 (pp 1918-1921) RIS download Bibtex download
  • Christensen H & Barker J (2009) Using location cues to track speaker changes from mobile, binaural microphones. INTERSPEECH 2009: 10TH ANNUAL CONFERENCE OF THE INTERNATIONAL SPEECH COMMUNICATION ASSOCIATION 2009, VOLS 1-5 (pp 124-127) RIS download Bibtex download
  • Christensen H, Ma N, Wrigley SN & Barker J (2009) A speech fragment approach to localising multiple speakers in reverberant environments. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (pp 4593-4596) RIS download Bibtex download
  • Arnaud E, Christensen H, Lu Y-C, Barker J, Khalidov V, Hansard ME, Holveck B, Mathieu H, Narasimha R, Taillant E , Forbes F et al (2008) The CAVA corpus: synchronised stereoscopic and binaural datasets with head movements.. ICMI (pp 109-116) RIS download Bibtex download
  • Christensen H, Ma N, Wrigley SN & Barker J (2007) Integrating pitch and localisation cues at a speech fragment level. International Speech Communication Association - 8th Annual Conference of the International Speech Communication Association, Interspeech 2007, Vol. 4 (pp 2752-2755) RIS download Bibtex download
  • Lu YC, Cooke M & Christensen H (2007) Active binaural distance estimation for dynamic sources. Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH, Vol. 2 (pp 933-936) RIS download Bibtex download
  • Christensen H, Kolluru BK, Gotoh Y & Renals S (2005) Maximum entropy segmentation of broadcast news. 2005 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS 1-5 (pp 1029-1032) RIS download Bibtex download
  • Kolluru BK, Christensen H & Gotoh Y (2005) Multi-stage compaction approach to broadcast news summarisation. 9th European Conference on Speech Communication and Technology (pp 69-72) RIS download Bibtex download
  • Christensen H, Lindberg B & Andersen O (2005) INTRODUCING PHONETICALLY MOTIVATED, HETEROGENEOUS INFORMATION INTO AUTOMATIC SPEECH RECOGNITION. INTEGRATION OF PHONETIC KNOWLEDGE IN SPEECH TECHNOLOGY, Vol. 25 (pp 67-86) RIS download Bibtex download
  • Christensen H, Kolluru B, Gotoh Y & Renais S (2004) From text summarisation to style-specific summarisation for broadcast news. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 2997 (pp 223-237) RIS download Bibtex download
  • Christensen H, Gotoh Y, Kolluru B & Renals S (2003) Are extractive text summarisation techniques portable to broadcast news?. ASRU'03: 2003 IEEE WORKSHOP ON AUTOMATIC SPEECH RECOGNITION AND UNDERSTANDING ASRU '03 (pp 489-494) RIS download Bibtex download
  • Kolluru B, Christensen H, Gotoh Y & Renals S (2003) Exploring the style-technique interaction in extractive summarization of broadcast news. ASRU'03: 2003 IEEE WORKSHOP ON AUTOMATIC SPEECH RECOGNITION AND UNDERSTANDING ASRU '03 (pp 495-500) RIS download Bibtex download
  • Christensen H, Gotoh Y & Renals S (2001) Punctuation Annotation Using Statistical Prosody Models. Proceedings of the ISCA Workshop on Prosody in Speech Recognition and Understanding (pp 35-40) RIS download Bibtex download
  • Christensen H, Lindberg B & Andersen O (2001) Introducing Phonetically Motivated Information into ASR. Proceedings of Eurospeech 2001 RIS download Bibtex download
  • Christensen H, Lindberg B & Andersen O (2000) Employing Heterogeneous Information in a Multi-Stream Framework. Proceedings of ICASSP 2000 RIS download Bibtex download
  • Christensen H, Lindberg B & Andersen O (2000) Noise robustness of heterogeneous features employing minimum classification error feature space transformations.. INTERSPEECH (pp 534-537) RIS download Bibtex download
  • Pan Y, Mirheidari B, Reuber M, Venneri A, Blackburn D & Christensen H () Automatic Hierarchical Attention Neural Network for Detecting AD. Interspeech 2019 RIS download Bibtex download
  • Mirheidari B, Blackburn D, Walker T, Venneri A, Reuber M & Christensen H () Detecting Signs of Dementia Using Word Vector Representations. Interspeech 2018 RIS download Bibtex download
  • Al-Hameed S, Benaissa M & Christensen H () Simple and robust audio-based detection of biomarkers for Alzheimer's disease. SLPAT 2016 Workshop on Speech and Language Processing for Assistive Technologies RIS download Bibtex download
  • Green P, Marxer R, Cunningham S, Christensen H, Rudzicz F, Yancheva M, Coy A, Malavasi M, Desideri L & Tamburini F () CloudCAST — Remote Speech Technology for Speech Professionals. Interspeech 2016 RIS download Bibtex download
  • Yue Z, Christensen H & Barker J () Autoencoder bottleneck features with multi-task optimisation for improved continuous dysarthric speech recognition. Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH View this article in WRRO RIS download Bibtex download
  • Alhinti L, Christensen H & Cunningham S () Towards the Understanding of Communicating Emotions for People with Dysarthria. Workshop in Speech and Hearing Disorders (WSPD 2018) RIS download Bibtex download

Reports

  • Christensen H & Barker J (2008) Inferring perceiver actions from binaural data RIS download Bibtex download
  • Khalidov V, Lu Y-C, Holveck B, Taillant E, Arnaud E, Barker J, Christensen H & Mathieu H (2007) Synchronized stereoscopic and binaural dataset with head movements : Recording details RIS download Bibtex download

Theses / Dissertations

  • Christensen H (2002) Speech Recognition using Heterogenous Information Extraction in Multi-Stream Based Systems. RIS download Bibtex download
  • Christensen H (1996) Speaker Adaptation of Hidden Markov Models using Maximum Likelihood Linear Regression. RIS download Bibtex download

Working papers

  • Pan Y, Mirheidari B, Reuber M, Venneri A, Blackburn D & Christensen H (2019) Automatic Hierarchical Attention Neural Network for Detecting AD. RIS download Bibtex download

Datasets

Other

  • Christensen H & Barker J (2009) Simultaneous Tracking of Perceiver Movements and Speaker Changes Using Head-Centered, Binaural Data. RIS download Bibtex download
  • Christensen H, Barker J, Lu Y-C, Xavier J, Caseiro R & Araújo H (2009) POPeye: Real-time, binaural sound source localisation on an audio-visual robot-head. RIS download Bibtex download
Grants

Current Grants

Previous Grants

  • COMPASS: COMPutational Assessment of Stroke Survivors, Research England, 11/2019 - 06/2020, £48,886, as PI
  • COCOA: COmputerised COgnitive Assessment, MRC, 10/2018 to 09/2019, £49,513, as PI
  • CloudVent: Cloud-based speech recognition for people with paralysis using ventilators, RCUK, 10/2015 - 04/2016, £360,000, as Co-PI
Professional activities
  • Member of the Speech and Hearing research group
  • Co-organising the 6th Workshop on Speech and Language in Assistive Technology (SLPAT`15)
  • Member of the Special Interest Group on Speech and Language Processing for Assistive Technologies (SIG-SLPAT)
  • Co-editor for an upcoming ACM TACCESS special issue on ``Speech and Language Interaction for Daily Assistive
  • Member of the COST action on ``Algorithms, Architectures and Platforms for Enhanced Living Environments (AAPELE)``