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CISDOC database
| Document ID (ISN) | 31523 |
| CIS number |
79-996 |
| ISSN - Serial title |
0386-975X - Journal of the Japan Accident Medical Association |
| Year |
1979 |
| Convention or series no. |
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| Author(s) |
Toriyama M. |
| Title |
A liquid-containing ear protector. |
| Bibliographic information |
Jan. 1979, Vol.27, No.1, p.63-70. Illus. 26 ref. |
| Abstract |
A new type of ear plug comprising a thin silicone cuff filled with polyethylene glycol and fitted with a valve was tested. The sound energy level was reduced by about 20, 24, 30, 35 and 39dB at 500, 1,000, 2,000, 4,000, and 8,000Hz, respectively. The ear protective effect was equal to that of ear-mould type protectors and considerably better than that of conventional ear protectors. The ear plug adapts well to any type of ear and fits snugly against the wall of the external auditory canal. |
| Descriptors (primary) |
earplugs; hearing protection |
| Descriptors (secondary) |
sound attenuation; evaluation of equipment |
| Document type |
- |
| Subject(s) |
Noise, hearing and vibration
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| Broad subject area(s) |
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| Browse category(ies) |
Hearing protection
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