21. The speech coding method of claim 20, wherein step (a) further includes the step of generating acoustic parameters from the input speech signal which include voice characteristics of the system user.
20. A speech coding method responsive to an input speech signal provided by a system user, the method comprising the steps of: (a) recognizing words in the input speech signal in accordance with a speech recognition vocabulary to generate a first transcription comprising at least one phonetic token representative of the input speech signal; (b) generating a second transcription comprising at least one phonetic token representative of a word in the input speech signal that is not associated with the speech recognition vocabulary; (c) one of transmitting and storing at least one of the phonetic tokens; and (d) generating a synthesized speech signal which is representative of the input speech signal provided by the system user using at least one of a plurality of pre-enrolled phonetic tokens that substantially matches at least one of the phonetic tokens.