21. The method of claim 15 , wherein the Eigen glottal pulse is identified from a glottal pulse database, the identification comprising the steps of: a. computing a glottal pulse distance metric between a number of glottal pulses; b. clustering the glottal pulse database into a number of clusters to determine centroid glottal pulses; c. forming a corresponding vector database by associating a vector with each glottal pulse in the glottal pulse database, wherein the centroid glottal pulses and the distance metric is defined mathematically to determine association; d. determining Eigenvectors of the vector database; and e. forming parametric models by associating a glottal pulse from the glottal pulse database to each determined Eigenvector to form parametric models.
22. The method of claim 21 , wherein the number of glottal pulses is two.