EST Safi

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Hachkar Z.,EST Safi | Mounir B.,EST Safi | Farchi A.,FST Settat | Abbadi J.,Mohammed V University
Physical and Chemical News | Year: 2011

The aim of this paper is to study the feasibility of using Dynamic Time Warping algorithm to implement a system of automatic recognition of Arabic isolated words. The extraction technique used to characterize the signal is "Mel Frequency cepstral coefficients or MFCC. Other prosodic parameters, such as energy, first and second drifts of MFCC", were concatenated to basic MFCC coefficients in order to search for more effective signal characteristics. A corpus of apprenticeship and of test pronounced by several Moroccan speakers is established in order to evaluate system performances. The better recognition rate (86%) was obtained while using, as characteristics, 12 coefficients MFCC, an energy coefficient, and 26 coefficients obtained from the first and second drifts of the MFCC coefficients and energy.

Farchi A.,FST Settat | Oualine N.,FST Settat | Mounir B.,EST Safi
Physical and Chemical News | Year: 2013

A method of isolated vocal word recognition by the identification of the upper envelope of their electric signals (temporal Prints) has been achieved. This method consists on recognizing different words pronounced by different persons. Thus, reference words have been created and the noise signal has been recorded to take into account the effect of the local conditions. This method of voice recognition was made trough the acquisition of the word to recognize, the extraction of the useful information, the determination of the upper envelope of the electric signal, the smoothing of the envelope, the comparison of the envelope of the word to recognize with the reference word and the final decision.

Salma K.,EST Safi | Khalid B.,EST Safi | Said E.F.,EST Safi
Journal of Theoretical and Applied Information Technology | Year: 2015

The development of a multidisciplinary product (having a strong software component) is a complex task with multiple constraints, especially during the design phase. The mastery of the design phase is a necessary condition for the product development success and therefore assuring its competitiveness on the market. To contribute to this mastery, the formalization and modeling of the process design is imperative. We aim in this article, the formalization of multidisciplinary product’s design methodology with an organizational character, throughout the modeling of the product design process’s different aspects: structural, behavioral…, which can be exploited by business stakeholders or software analysts. We used two modeling standards: UML and BPMN and we made a comparative study between models obtained by these two standards. © 2005 - 2015 JATIT & LLS. All rights reserved.

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