VOICE INTERACTIVE DEVICE

PROBLEM TO BE SOLVED: To provide a voice interactive device capable of speaking in consideration of an individual difference in real time.SOLUTION: The voice interactive device has a speech reception part for identifying speech of a person and a speech part for speaking. The speech part speaks when a silent time which is a time during which the speech reception part does not receive any speech after the speech part speaks exceeds a predetermined standby time. The voice interactive device also has: a storage part for storing a response time starting from a speech by the speech part through a response by the person until reception of the speech by the speech reception part; an estimation part for calculating an average and a dispersion of the response time stored by the storage part, creating a Gamma distribution concerning the response time and the speech probability by using the calculated average and dispersion and estimating a silence time which allows determination that the person does not have intention to speak by using the created Gamma distribution; and a speech control part for updating the standby time in the speech part, setting the silent time estimated by the estimation part as a new standby time.SELECTED DRAWING: Figure 1 【課題】リアルタイムで人の個人差を考慮して発話することができる音声対話装置を提供すること。【解決手段】音声対話装置は、人の発話を認識する発話受付部と、発話する発話部と、を備え、前記発話部は前記発話部が発話してから前記発話受付部が発話を受け付けなかった時間である無音時間が予め定められた待ち時間を超えた場合に発話する。音声対話装置は、さらに、前記発話部が発話してから人が応答して前記発話受付部が発話を受け付けるまでの応答時間を記憶する記憶部と、前記記憶部にて記憶された応答時間の平均及び分散を算出し、算出した平均及び分散を用いて応答時間及び発話確率に関するガンマ分布を作成し、作成したガンマ分布を用いて人が発話する気がないと判断できる無音時間を推定する推定部と、前記推定部にて推定された無音時間を新たな待ち時間として、前記発話部における前記待ち時間を更新する発話制御部と、を備える。【選択図】図１