In emergency broadcastings on disasters, persons with neuropsychological impairments may hear sounds but cannot recognize them in their brain. In order to ascertain its actual condition, hearing experiments were conducted on four groups with neuropsychological impairments. Thirty-two persons with impairments and 20 persons with non-impairments participated in the experiment. As for the question, I asked which one is easier to understand in the case of (1) "reading without intonation" and "reading with emphasis on intonation," (2) "reading without intonation" and "reading without intonation" adding a specific chime, and (3) "reading without intonation" and "singing." For (1), the majority of all subjects could understand "reading with emphasis on intonation" announced by females. For (2), the persons with impairments were unable to recognize the chime. For (3), majority of all subjects answered as "songs" being easier to understand. In the future, we will need to consider alternate announcements with male and female speakers in the emergency broadcasting for disasters, and we need to consider new alarms, because we cannot get the attention of those with the impairments using the current chime.
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