Joint estimation of the LPC parameters and the multi-pulse excitation. - Joseph Picone; Dimitrios P. Prezas; Walter T. Hartwell; Joseph L. LoCicero (Speech Commun., 1986)

The stepdown procedure for complex predictor coefficients. - Joseph Picone; Dimitrios P. Prezas; Walter T. Hartwell; Joseph L. LoCicero (IEEE Trans. Acoust. Speech Signal Process., 1986)

Enhancing the performance of speech recognition with echo cancellation. - Joseph Picone; M. A. Johnson; Walter T. Hartwell (ICASSP, 1988)