Speech signal - recovering device and speech signal - reconstruction method

摘要

A synthesis filter (106) a plurality of broadband - speech signals synthesized by combining of broadband - phoneme signals and sound sources signals from a speech signal - code book (105), and a, a distortion evaluation unit (107) selects one of the broadband - speech signals at a minimum waveform distortion, with respect to an upwardly sampled narrowband - speech signal, the conversion from the sampling unit (101) is issued, from. A first bandpass filter (103) pulls a frequency component outside of a narrow band of the broadband - voice signal, and a band synthesis unit (104) of the combined with the upwardly narrowband - speech signal sampled.