Activity recognition by detecting acoustic events for eldercare

Kun Yi Huang, Chi Chun Hsia, Ming Shih Tsai, Yu-Hsien Chiu, Gwo Lang Yan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

More and more efforts have been made to assist interdependent people in aging society today, particularly to the elderly living alone at home. This paper proposes an activity recognition system based on detection of acoustic events caused by residents within the living space. In the data collection process, an activity sound recording system with auto gain controlled and linearly amplified capability is equipped in a ward-like environment. The microphones are installed along the path from bedroom to lavatory. An activity sound database containing 105 designed scenarios is simulated and transcript in terms of 21 acoustic events such as footfall, fall down, and calling for help to form the acoustic event database. 21 Hidden Markov models (HMM) corresponding to acoustic events are trained by the acoustic event database. A keyword spotting recognition technology is adopted to recognize acoustic events and its ordered sequences for modeling activities. Acoustic features are computed by 39-dimensional mel-scaled frequency cepstral coefficients (MFCCs) with their first and second derivatives. The preliminary results show the average recognition rate of acoustic events is 91% for inside testing and 72% for outside testing respectively. The proposed approach shows an encouraging potential on the demand of modeling the regular living patterns of every variety.

Original languageEnglish
Title of host publication6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
Pages1522-1525
Number of pages4
DOIs
Publication statusPublished - 2010 Oct 22
Event6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech - Singapore, Singapore
Duration: 2010 Aug 12010 Aug 6

Publication series

NameIFMBE Proceedings
Volume31 IFMBE
ISSN (Print)1680-0737

Other

Other6th World Congress of Biomechanics, WCB 2010 - In Conjunction with 14th International Conference on Biomedical Engineering, ICBME and 5th Asia Pacific Conference on Biomechanics, APBiomech
CountrySingapore
CitySingapore
Period10-08-0110-08-06

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biomedical Engineering

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