Efficiency of the energy contained in modulators in the Arabic vowels recognition

The speech signal is described as many acoustic properties that maycontribute differently to spoken word recognition. Vowel characterization isan important process of studying the acoustic characteristics or behaviors ofspeech within different contexts. This current study focuses on themodulators characteristics of three Arabic vowels, we proposed a new approach to characterize the three Arabic vowels /a/, /i/ and /u/. Theproposed method is based on the energy contained in the speech modulators.The coherent subband demodulation method related to the spectral center ofgravity (COG) was used to calculate the energy of the speech modulators. The obtained results showed that the modulators energy help characterize theArabic vowels /a/, /i/ and /u/ with an interesting recognition rate rangingfrom 86% to 100%