Robert K. Whitman
Delores M. Etter
Dept. of Elec. and Comput. Eng., Univ. of Colorado, CB 425, Boulder, CO 80309-0425
Numerous techniques have been developed to estimate the pitch periods in speech signals. The determination of the pitch period is an important aspect in speech analysis. The estimation of the pitch is essential in systems for pitch synchronous analysis, speech analysis/synthesis, and in speech coding. Pitch extraction algorithms use a variety of methods in both the time and frequency domains to estimate the pitch periods. In this paper, an investigation is made into the use of an energy operator developed by Teager, to estimate the pitch period of the speech data. The Teager energy operator estimates the energy required to produce an acoustic signal. Since speech signals are the result of acoustic interactions, it is appropriate to make this investigation using the energy operator.