Mohamed Fezari

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The aim of this paper is to investigate the development of a navigation aid for blind and visually impaired people. It is based on a microcontroller with synthetic speech output. This aid is portable and gives information to the user about urban walking routes to point out what decisions to make. On the other hand, and in order to reduce navigation(More)
Many people with disabilities do not have the dexterity necessary to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and(More)
An electronic travel aid is a form of assistive technology having the purpose of enhancing mobility for the blind. This paper describes the development of a microcontroller based navigation system for blind pedestrians. It is a portable, self contained portable electronic system that will allow visually impaired individuals to travel through familiar and(More)
Users are able to operate a joystick to control the chair, however many more severely handicapped users need some other means of controlling the wheelchair. The aim of this work is to implement an interesting application using small vocabulary word recognition processor and some sensors on a smart system. The adopted model is based on grouping a(More)
This paper describes the construction phase of a corpus of everyday life sounds for a system of separation and classification of audio sources in a habitat; an application of telemonitoring of the elderly or disabled. We first presented the key concepts of the research area, and then we presented works and projects that address detection of distress(More)
A voice command system for a robot arm is designed as a part of a research project. The methodology adopted is based on a spotted words recognition system based on a robust HMM (Hidden Markove Model) technique with cepstral coefficients as parameters used in automatic speech recognition system. To implement the approach on a real-time application, a(More)
The multiprocessor system is composed of pipelining a DSP processor for speech enhancement, a new voice recognition module for isolated word recognition and a microcontroller for transforming the voice order into coded byte to be transmitted to the robots via wireless transmission module. The resulting design is used to control via master-slave protocol a(More)