| 摘要 |
A plurality of predetermined code vectors and registered keyword data are stored. A speech encoder codes an input speech keyword to produce coded keyword data by referring to the predetermined code vectors. After detecting a matching level between the registered keyword data in ROM 113 and the coded keyword data in RAM 112, it is determined whether the coded keyword data is true or false by comparing the matching level with a predetermined criterion. If true, calling restrictions are removed. |
