7. A vocoder as set forth in claim 6, wherein the digital speech data operated upon by said analyzing means is representative of an analog speech signal normalized for pitch and speed such that the allophones represented by the digital speech data communicated from said library means to said phoneme code sequence-forming means more nearly approximate the original analog speech signal.
8. A vocoder as set forth in claim 7, wherein the digital speech data stored in said library means and representative of allophones comprises speech parameters including lnear predictive coding reflection coefficients, and said speech synthesizer means is a linear predictive coding speech synthesizer.