| 摘要 |
PURPOSE:To provide a frame synchronizing process by stably interpreting and encoding an input speech with a small arithmetic quantity by using spectrum parameters and sound source parameters. CONSTITUTION:An AR preparatory selecting means 6 outputs a preparatory select AR code word 8 and an MA preparatory selecting means 16 outputs a preparatory select MA code word 18 selected from an MA code table 17 according to the distance to MA 15. A sound source preparatory selecting means 9 outputs a preparatory select sound source code word 11 selected preparatorily from a sound code book 10 according to a sound source code word series and a sound source position detecting means 2 detects a sound source position 3 in a frame; and a sound source generating means 12 generates a sound source 13 synchronized with the sound source position 3 from the preparatory select sound source code word 11 and a synthesizing means 19 synthesizes a synthesis speech 20 of the preparatory select AR code word 8, preparatory select MA code word 18, and sound source 13. An optimum code word selecting means selects the combination of an AR code word, an MA code word, and a sound source code word which minimize the distance between the synthesis speech 20 and an input speech 1 among the preparatory select AR code words 8, preparatory select MA code words 18, and preparatory select sound code words 11. |
