Transmitter with an improved harmonic speech encoder

摘要

In the harmonic sound encoder 16, the encoded acoustic signal is indicated by a number of LPC parameters which are determined by the LPC Parameter Computer 30, the pitch value and the gain value. Sound encoder is provided with an (rough) pitch set for determining the prescribed pitch of the computer 32, a coarse pitch to determine a pitch from the rough regulation flutes value. This determination of the specified pitch value is to be treated in the analysis-by-synthesis method, the pitch value specified These results in a minimum error measure between the original sound signal and synthesized sound signal display table.