  This paper presents a new method on the use of the gammachirp auditory filter
based on a continuous wavelet analysis. The gammachirp auditory filter is
designed to provide a spectrum reflecting the spectral properties of the
cochlea, which is responsible for frequency analysis in the human auditory
system. The impulse response of the theoretical gammachirp auditory filter that
has been developed by Irino and Patterson can be used as the kernel for wavelet
transform which approximates the frequency response of the cochlea. This study
implements the gammachirp auditory filter described by Irino as an analytical
wavelet and examines its application to a different speech signals.
  The obtained results will be compared 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.
