2. The method of claim 1 , wherein said step of receiving said incremental database comprises: downloading, through a communications network, said incremental database from said context server, if said incremental database is not already present in said user terminal.
3. The method of claim 2 , wherein said step of downloading said incremental database into said user terminal comprises: downloading an incremental database of speech waveforms; and updating a descriptor file of said enlarged database of speech waveforms.