Third International Conference on Spoken Language Processing (ICSLP 94)
Some Speech Enhancement algorithms based on the iterative Wiener filtering Method due to Lim-Oppenheim  are presented. In the original Lim-Oppenheim algorithm, speech AR estimation is carried out using classic second-order analysis, but our algorithms consider a more robust AR modelling. Two different strategies of speech AR estimation are presented and both estimators are tiying to see as less amount of noise as possible. First one uses a previous One-Sided Autocorrelation computation, that is a pole-preserving function, and the actual SNR in the second-order LPC analysis is increased. Second one combines advantages of Higher-Order Statistics  with a linear combination of AR coefficients, belonging to two consecutive overlapped frames, to assess a less disturbed speech estimation.
Bibliographic reference. Salavedra, Josep / Masgrau, Enrique / Moreno, Asuncidn / Estarellas, Joan / Hernando, Javier (1994): "Some fast higher order AR estimation techniques applied to parametric wiener filtering", In ICSLP-1994, 1655-1658.