Number-of recognition candidates determining system in speech recognizing device

摘要

A number-of-recognition candidates determining system in a speech recognition device comprises an SN ratio calculator for calculating an SN ratio of an inputted speech to the environmental noise, and a number-of-recognition candidates controller for controlling the number of the recognition candidates according to the value of the SN ratio calculated by the SN ratio calculator. The number of recognition candidates varies according to the value of the SN ratio.