加齢による聴覚特性に基づいた福祉機器警報音の設計

概要

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A large number of home care equipment has been developed to support the independent living and the care of the elderly person. Almost equipments have a alarm to call a care person or to sound a warning in case of emergency. Physiological characteristics of human will be getting weaker with age. The alarm sound must be designed with considering a hearing loss of the elderly person. Since the alarm is usually used indoor, it is also necessary to evaluate the relation between the basic characteristic of sound and the room layout. In this work, we investigated the alarm sound of the home care equipment based on both the age-related hearing characteristic of the elderly person and the propagation property of indoor sound. As a result, it was clear that the hearing characteristic of the elderly person is highly sensitive to the sound which has the frequency from 700 Hz to 1 kHz. In addition, the indoor absorption ratio of the sound is the smallest when the frequency is 1 kHz. Therefore, the frequency of 1 kHz is good for the alarm sound of the home care equipment. The flow chart to design the alarm sound of home care equipment was proposed taking the age-related auditory sense into account.
社団法人日本機械学会の論文
2001-08-25