Patent ID: 9241226
Filing Date: 2016-01-19
CPC Classification: A61B,H04R

Claim Text:
1. An uncomfortableness threshold value estimation system comprising: one or more memories; and circuitry which in operation is configured to: present to a user a first sound, and to present to the user a second sound after lapse of a first predetermined time from a point of presenting the first sound, the first sound having a sound pressure within a predetermined sound pressure range, and the second sound having a same sound pressure as that of the first sound; measure an electroencephalogram signal of the user; extract, from an electroencephalogram signal which is measured within a second predetermined time from a point of presenting the second sound, and which is evoked by the second sound, a characteristic amount of an event-related potential of the electroencephalogram signal; and estimate, by referring to a predetermined relationship between characteristic amount values of event-related potential and uncomfortableness threshold values, an uncomfortableness threshold value corresponding to the extracted characteristic amount of the event-related potential, the uncomfortableness threshold values not being originated with event-related potential values.