. Eurostat, Projections de population, 2008.

V. Bellamy and C. Beaumel, Bilan démographique 2012. la population croît, mais plus modérément, INSEE Première, pp.1429-1430, 2013.

D. A. Norman and S. W. Draper, User Centered System Design; New Perspectives on Human-Computer Interaction, L, 1986.

J. Ogg and C. , Bonvalet, L'état des enquêtes sur l'entraide en europe, Rapport final de recherche CNAF, Mire, 2006.

I. Rosow, Socialization to old age, 1974.

E. Cumming and W. E. Henry, Growing Old: The Process of Disengagement, Basic Books, 1961.

S. Clément and M. Membrado, Penser les vieillesses Regards anthropologiques et sociologiques sur l'avancée de l'âge, pp.109-128

A. Newel and P. Gregor, User-Sensitive Inclusive Design, Actes du Colloque Interaction Homme Machine et Assistance, pp.18-20, 2001.
DOI : 10.1007/s10209-010-0203-y

E. Ebersold, Le champ du handicap, ses enjeux et ses mutations: Du d??savantage ?? la participation sociale, An??lise Psicol??gica, vol.20, issue.3, pp.149-164, 2002.
DOI : 10.14417/ap.313

W. Ryan and K. Burk, Perceptual and acoustic correlates of aging in the speech of males, Journal of Communication Disorders, vol.7, issue.2, pp.181-192, 1974.
DOI : 10.1016/0021-9924(74)90030-6

N. Takeda, G. Thomas, and C. Ludlow, Aging Effects on Motor Units in the Human Thyroarytenoid Muscle, The Laryngoscope, vol.22, issue.6, pp.1018-1025, 2000.
DOI : 10.1097/00005537-200006000-00025

P. Mueller, R. Sweeney, and L. Baribeau, Acoustic and morphologic study of the senescent voice, Ear, Nose, and Throat Journal, vol.63, pp.71-75, 1984.

A. Baba, S. Yoshizawa, M. Yamada, A. Lee, and K. Shikano, Acoustic models of the elderly for large-vocabulary continuous speech recognition, Electronics and Communications in Japan, Part, vol.2, pp.87-136, 2004.

R. C. Vipperla, S. Renals, and J. , Ageing voices: The effect of changes in voice parameters on ASR performance, EURASIP Journal on Audio, Speech, and Music Processing, pp.1-10, 2010.

M. Vacher, F. Portet, A. Fleury, and N. Noury, Development of Audio Sensing Technology for Ambient Assisted Living, International Journal of E-Health and Medical Communications, vol.2, issue.1, pp.35-54, 2011.
DOI : 10.4018/jehmc.2011010103
URL : https://hal.archives-ouvertes.fr/hal-00757407

C. J. Todd, C. Ballinger, and S. Whitehead, A global report on falls prevention: reviews of socio-demographic factors related to falls and environmental interventions to prevent falls amongst older people living in the community, Tech. rep, 2007.

F. Bloch, V. Gautier, N. Noury, J. Lundy, J. Poujaud et al., Evaluation under real-life conditions of a stand-alone fall detector for the elderly subjects, Annals of Physical and Rehabilitation Medicine, vol.54, issue.6, pp.54-391, 2011.
DOI : 10.1016/j.rehab.2011.07.962

M. Popescu, Y. Li, M. Skubic, and M. Rantz, An acoustic fall detector system that uses sound height information to reduce the false alarm rate, 2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, pp.4628-4631, 2008.
DOI : 10.1109/IEMBS.2008.4650244

D. Charalampos and I. Maglogiannis, Enabling human status awareness in assistive environments based on advanced sound and motion data classification Development of an automated speech recognition interface for personal emergency response systems, Proceedings of the 1st international conference on PErvasive Technologies, pp.1-1, 2008.

P. Milhorat, D. Istrate, J. Boudy, and G. Chollet, Companionable Hands-free speech-sound The European Association for, EUSIPCO (European Signal Processing Conference), pp.2012-1678

F. Portet, M. Vacher, C. Golanski, C. Roux, and B. Meillon, Design and evaluation of a smart home voice interface for the elderly: acceptability and objection aspects, Personal and Ubiquitous Computing, vol.8, issue.3, pp.127-144, 2013.
DOI : 10.1007/s00779-011-0470-5
URL : https://hal.archives-ouvertes.fr/hal-00953242

R. Vipperla, M. Wolters, and S. Renals, Spoken dialogue interfaces for older people Advances in Home Care Technologies, pp.118-137, 2012.

C. Ballinger and S. Payne, The construction of the risk of falling among and by older people, Ageing and Society, vol.22, issue.03, pp.305-321, 2002.
DOI : 10.1017/S0144686X02008620

M. Bobillier-chaumon, C. Michel, F. Tarpin-bernard, and B. Croisile, Can ICT improve the quality of life of elderly adults living in residential home care units? From actual impacts to hidden artefacts, Behaviour & Information Technology, vol.3, issue.1, pp.1-17
DOI : 10.1177/030631289019003001
URL : https://hal.archives-ouvertes.fr/halshs-01206394

R. Cucchiara, C. Grana, A. Prati, and R. Vezzani, Computer vision system for in-house video surveillance, Vision, Image and Signal Processing, IEE Proceedings, vol.152, issue.2, pp.242-249, 2005.

K. Toyama, J. Krumm, B. Brumitt, and B. Meyers, Wallflower: principles and practice of background maintenance, in: Computer Vision, The Proceedings of the Seventh IEEE International Conference on, pp.255-261, 1999.

C. Stauffer and W. E. Grimson, Adaptive background mixture models for real-time tracking, Proceedings. 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (Cat. No PR00149), 1999.
DOI : 10.1109/CVPR.1999.784637

R. Deeb, E. Desserée, and S. Bouakaz, Real-time two-level foreground detection and person-silhouette extraction enhanced by body-parts tracking, Proc. SPIE, pp.1-8, 2012.
DOI : 10.1117/12.908435
URL : https://hal.archives-ouvertes.fr/hal-01352971

C. Rother, V. Kolmogorov, and A. Blake, grabcut": Interactive foreground extraction using iterated graph cuts, ACM SIGGRAPH 2004 Papers, SIGGRAPH '04, pp.309-314, 2004.

R. Deeb, D. Elodie, and S. Bouakaz, Extraction de silhouette et suivi des parties du corps dans un environnement non contrôlé, p.2012, 2012.

R. Deeb, F. Lédée, E. Desserée, and S. Bouakaz, Méthode robuste pour la détection de chute dans un environnement non contrôlé, p.2012

F. Aman, M. Vacher, S. Rossato, and F. Portet, Analysing the Performance of Automatic Speech Recognition for Ageing Voice: Does it Correlate with Dependency Level?, 4th Workshop on Speech and Language Processing for Assistive Technologies, pp.9-15, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00953243

M. Vacher, P. Chahuara, B. Lecouteux, D. Istrate, F. Portet et al., The sweet-home project: Audio technology in smart homes to improve well-being and reliance, 2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, pp.7298-7301, 2013.
DOI : 10.1109/IEMBS.2011.6091309
URL : https://hal.archives-ouvertes.fr/hal-00641850

M. Bobillier-chaumon, B. Cuvillier, S. Bouakaz, and M. Vacher, Démarche de développement de technologies ambiantes pour le maintien à domicile des personnes dépendantes : vers une triangulation des méthodes et des approches, Actes du 1er Congrès Européen de Stimulation Cognitive, pp.2012-121

K. Seymore, C. Stanley, S. Doh, M. Eskenazi, E. Gouvea et al., The 1997 CMU Sphinx-3 English broadcast news transcription system

B. Lecouteux, M. Vacher, and F. Portet, Distant Speech Recognition in a Smart Home: Comparison of Several Multisource ASRs in Realistic Conditions, pp.1-4, 2011.
URL : https://hal.archives-ouvertes.fr/hal-00642306

F. Aman, V. Auberge, and M. Vacher, How affects can perturbe the automatic speech recognition of domotic interactions, Affective Social Speech Signals, pp.1-5, 2013.
URL : https://hal.archives-ouvertes.fr/hal-00953247