| 摘要 |
In a vocoder speech transmission process a synthesiser component (ST') at the receiving end has no spectral channel filter, but simulates its pulse signal responses and noise signal responses (hk(i), rk(J)), which are respectively stored in separate read-only memories (ROM H, ROM R), and read-out from each of these read-only memories is effected during a synthesis interval in dependence upon the tuning character criterion (Sc) for the weighting of the signal responses with the associated transmitted envelope curve values (ak), and the signal responses, together with the envelope curve values, are fed to a multiplier-adder. <IMAGE> |
