Jean Menez

Low bit rate voice coding method and system

This low bit rate voice encoding involves short-term predictive filtering the voice signal s(n) using partial correlation related coefficients derived from pre-emphasized s(n), and deriving a short term signal r(n); then deriving a long-term residual signal e(n) by subtracting a delayed synthesized short term b.r(n-31 M) from said r(n); and code excited encoding e(n) into codeword references ks and associated gains Gs.