AIM: to explore the quantitative relation of reasons of speech disorder with hearing dysesthesia, and to provide objective and correct evidence for speech rehabilitation and hearing compensation.

Now the State compensation Law doesn't mention liability of damage caused by overtime hearing of court. So the counterparts of certain case couldn't claim any compensation for their loss.

Because of this dramatic situation, compensation ranges are set to increase for all cases, ranging from injuries with minimal or no sensorial hearing loss to total deafness.