METHOD FOR ENLARGING THE BAND WIDTH OF A NARROW-BAND FILTERED VOICE SIGNAL, ESPECIALLY A VOICE SIGNAL EMITTED BY A TELECOMMUNICATION APPLIANCE

摘要

According to the present invention, in order to expand the bandwidth speech signal of narrow band filter in a manner of simple and save cost, without reducing quality, narrow band filter voice signal estimation carries out according to frequency component and is higher than first frequency range lower than second frequency range, in isolated mode (i.e. according to different independent solutions), and it is extended, is based on the estimation. The estimation can be preferably or in the temporo area or in the frequency range.