An 8.0-/8.4-kbps wideband speech coder based on mixed excitation linear prediction

摘要

A new method based on the Mixed Excitation Linear Prediction (MELP) model for coding wideband speech signals at medium bit rates is proposed. Modifications are made to the voiced/unvoiced strength analysis, pitch estimation an linear predictive (LP) analysis/synthesis of the Federal MELP Standard. An 8.0-/8.4-kbps wideband MELP coder is developed based on the modifications.