11. A communications system for synthesizing speech from textual information, comprising: a user terminal, the user terminal further comprising: a speech synthesis engine, a basic database of speech waveforms, and a database manager for managing the composition of an enlarged database of speech waveforms for said speech synthesis engine comprising said basic database of speech waveforms and an incremental database of speech waveforms; and a context server for downloading, over a communications network, said incremental database of speech waveforms into said user terminal, said incremental database being based on a context of said textual information to be synthesized determined from context information extracted from said textual information to be synthesized; and wherein the speech synthesis engine is configured to use at least part of the basic database and at least part of the incremental database to synthesize the speech, said speech synthesis engine starting speech synthesis of said textual information employing said basic database of speech waveforms and continuing speech synthesis of said textual information employing said enlarged database of speech waveforms.
17. The communications system of claim 11 , further comprising a content server for downloading said textual information into said user terminal.