A new coding method for speech and audio signals

In this paper a new representation or modeling method of speech signals is introduced. The proposed method is based on the generation of the so-called Predefined Signature S={S_R} and Envelope vector E={E_K} Sets (PSEVS). These vector sets are speaker and language independent. In this method, once the speech signals are divided into frames with selected lengths, then each frame signal piece X_i is reconstructed by means of the mathematical form of X_i=C_iE_KS_R. In this representation, C_i is called the frame coefficient, S_R and E_K are the vectors properly assigned from the PSEVS respectively. It is shown that the proposed method provides fast reconstruction and substantial compression ratio with acceptable hearing quality.