Friday, 9 March 2012

シルバー産業新聞 silver industry news paper

i worked for Silver industry news paper. It is about accessible design. This issue is about hearing difference by age. Young people can hear high tone. On the other side, when you getting older and older, you losing ability of hearing high tone and it is easy you to hear low sound.
According this situation, some electricity company, they use alarm sound not too high tone because of this fact. Your consideration make the world better place.

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