KEYWORD SPOTTER USING MODIFIED VITERBI ALGORITHM, BEAM WIDTH ANF DURATION INFORMATION

摘要

The present invention is half ( ) models and key word detector using a sliding without the use of a non- keyword models It relates to . A frame - synchronous Viterbi sliding of the key words on search space because they can not know the end points of the input speech (Viterbi) algorithm to be modified . In addition , by applying the beam width in the Viterbi search space for the key words it increases the real-time performance , reducing the amount of computation . Determining module, thereby improving detection performance by using the duration of the information about the last state of the keyword model .