Abstract: In this study, we propose another manner of cochlea filter implementation based on a gammachirp wavelet which is designed to provide a spectrum reflecting the spectral properties of the cochlea. The application of the gammachirp wavelet transformation is then used to analyse some vowels like /a/, /u/ and /i/. We compare then the obtained results with those obtained by two other predefined wavelet families that are Morlet and Mexican Hat. The results show that the gammachirp wavelet family gives results that are comparable to ones obtained by Morlet and Mexican Hat wavelet family.