Speech decoding apparatus and method

    公开(公告)号:JP5287502B2

    公开(公告)日:2013-09-11

    申请号:JP2009126506

    申请日:2009-05-26

    发明人: 真由美 長崎

    IPC分类号: G10L19/18 G10L19/16

    摘要: PROBLEM TO BE SOLVED: To provide a speech decoding device and method for reducing break of output speech when an encoding system, and a decoding system corresponding to the encoding system are changed. SOLUTION: The speech decoding device decodes a speech signal which is encoded by either one of a plurality of kinds of encoding systems, by the decoding system corresponding to the encoding system used for the encoding. The speech deciding device includes: a background noise superimposing circuit for superimposing a background noise signal to a decoded signal and outputting it; and a background noise superimposition control circuit for superimposing the background noise signal to the decoded signal, in the background noise superimposing circuit, for a predetermined fixed period including the change time, when the encoding system and the decoding system corresponding to the encoding system are changed. COPYRIGHT: (C)2011,JPO&INPIT