Speech coding using a method of discrete energy separation (DESA)
Robert Whitman, Delores M. Etter · 2002
The use of the Discrete Energy Separation Algorithm (DESA), developed by Kaiser, Quatieri, and Maragos (1993) to code speech signals is investigated. We show that the DESA-demodulated signals can be coded and decoded using a combination of polynomial and sinusoidal approximations. We discuss how the data is subband filtered. Then how each subband is processed to encode and decode the data. A brief discussion is given of the quality of the reconstructed or synthesized speech output.