Unpleasant sound pressure evaluation system, unpleasant sound pressure evaluation device, unpleasant sound pressure adjustment device, unpleasant sound pressure evaluation method, and computer program therefor

摘要

The estimation result is corrected in the estimation of unpleasant sound pressure based on the electroencephalogram, and safer hearing aid adjustment is realized. The unpleasant sound pressure evaluation system presents each of the plurality of sound stimulation groups to the user in sequence. Each sound stimulus group includes at least one sound stimulus, and the frequencies of the sound stimulus groups are different from each other. For each sound stimulation group, the system refers to an extraction unit that extracts information related to event-related potentials from a user's brain wave signal in a predetermined section determined from the presentation time of at least one sound stimulation, and a predetermined standard. From the information related to the event-related potential, an estimation unit that estimates the user's unpleasant sound pressure, and whether the estimated unpleasant sound pressure is higher than a predetermined maximum unpleasant sound pressure or less than the maximum unpleasant sound pressure, Each of the unpleasant sound pressures determined to be higher than the maximum unpleasant sound pressure when the ratio determined that the unpleasant sound pressure is higher than the maximum unpleasant sound pressure in the determination results of the plurality of sound stimulation groups as a whole is smaller than a predetermined value And a correction unit that corrects the sound pressure to a sound pressure equal to or lower than the maximum unpleasant sound pressure.