Summary
The purpose of this paper is to clarify the difference of speech intelligibility between the normal headsets and the bone conduction hearing devices. From the research results of the assessment of noise exposure of call center operators with wearing the headsets, the risk of hearing damage in call centers has been found out.
Also, it has been found that the bone conduction hearing devices is better equipment than normal headsets for prevention of hearing loss of call-center operators. But, the difference of speech intelligibility between normal headsets and bone conduction hearing devices does not clear exactly yet. In this paper, the comparison experiment of speech intelligibility between normal headsets and bone conduction hearing devices at call-center was carried out at the laboratory.
It was clear that the speech intelligibility had almost the same between normal headsets and bone conduction hearing devices. It was also clear the bone conduction hearing devices are able to use instead of the normal headsets without hearing loss damages at the call center.