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
_i
E
_K
S
_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.