SCIENTIFIC REPORT NO. 2 DESIGN AND STUDY OF CORRELATION INSTRUMENTATION FOR SPEECH ANALYSIS AND SYNTHESIS

摘要

This report covers the studies leading to the selection of an optimum analog instrumentation for processing the output signal of a Vocoder for digital transmission over a standard voice channel. The system is based upon the matching of the incoming voice events against a catalog of speech patterns so that only the pattern number, rather than the speech event itself, need be transmitted. In the receiver, the proper speech pattern is retrieved from a similar memory and generates the required voltages for the Vocoder synthesizer.nThe system that was treated in detail features completely analog processing so that small deviations in the pattern can readily be ac-commodated. Time sequential, rather than parallel pattern compari¬son, is employed. A single magnetic drum is used as the storage medium which can serve any number of voice channels. A complete analysis of the system was made and no serious implementation problems were encountered.