CORRECTION SPEECH DETECTION DEVICE, VOICE RECOGNITION SYSTEM, CORRECTION SPEECH DETECTION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a correction speech detection device capable of determining whether a correction speech (correctly retried speech) has been performed or not, not on the basis of a change in a sound feature amount for each speech.SOLUTION: A correction speech detection device of the present invention takes a sound signal as input, and presents a voice recognition result for the sound signal. The correction speech detection device takes m as an integer of two or more and includes: a reaction time measuring unit for measuring a difference between a time at which a voice recognition result for a sound signal having been input at a (m-1)th time is presented and an input time of a sound signal having been input at a mth time, as a (m-1)th reaction time; and a determination unit for determining whether a correction speech is included or not in the sound signal having been input at the mth time, based on the (m-1)th reaction time.SELECTED DRAWING: Figure 1