Assessment system of speech sound listening, and method and program thereof

摘要

In an exemplary assessment system of speech sound listening, an output section presents a speech sound to a user as an auditory stimulation; a positive component determination section determines whether a positive component appears in an event-related potential of an electroencephalogram signal of the user in a range from 600-900 ms from a starting point, the starting point being a point in time at which the speech sound is presented, and outputs an assessment result as to whether the user is listening to the speech sound with strife or not; and a negative component determination section determines whether a negative component appears in the event-related potential in a range from 100-300 ms from a starting point, the starting point being the point in time at which the speech sound is presented, and outputs an assessment result as to whether the user is annoyed by the speech sound or not.

主权项

1. An assessment system of speech sound listening, comprising:
a biological signal measurement unit configured to measure an electroencephalogram signal of a user; a presented-speech sound determination unit configured to determine a monosyllabic speech sound to be presented, by referring to a speech sound database retaining a plurality of monosyllabic speech sounds; an output unit configured to present a speech sound determined by the presented-speech sound determination unit to the user as an auditory stimulation; a positive component determination unit configured to determine a strife parameter concerning how much effort has been made to aurally distinguish the speech sound based on whether a positive component appears in an event-related potential of the electroencephalogram signal in a range from 600 ms to 900 ms from a starting point, the starting point being a point in time at which the speech sound is presented, and configured to output an assessment result as to whether the user is listening to the speech sound with strife or not in accordance with a result of determination; and a negative component determination unit configured to determine an annoyance parameter indicating how annoying by loudness the speech sound has been felt based on whether a negative component appears in an event-related potential of the electroencephalogram signal in a range from 100 ms to 300 ms from a starting point, the starting point being the point in time at which the speech sound is presented, and configured to output an assessment result as to whether the user is annoyed by loudness of the speech sound or not in accordance with a result of determination.