Speech discrimination capability determination device, speech discrimination capability determination system, hearing aid gain determination device, speech discrimination capability determination method and program thereof

摘要

It is possible to accurately determine the speech discrimination ability of the user. The speech discrimination capability determination system uses an event-related potential starting from the output time of the first speech output at the first frequency and the output time of the first speech output at the second frequency from the user's brain wave signal. The event-related potential, the event-related potential starting from the output time of the second word sound output at the first frequency, and the event-related potential starting from the output time of the second word sound output at the second frequency are acquired. The MMN determination unit, for each of the first and second speech sounds, the difference between the event-related potential acquired when output at the first frequency and the event-related potential acquired when output at the second frequency Information is acquired, and it is determined whether or not a negative component exists in the predetermined time range after the first and second word sounds are output in the difference information. When the determination result indicates that a negative component is present, the discrimination ability determination unit determines that the user can discriminate between the first and second word sounds.