| Document ID (ISN) | 22749 |
| CIS number |
75-676 |
| ISSN - Serial title |
0001-4966 - Journal of the Acoustical Society of America |
| Year |
1974 |
| Convention or series no. |
|
| Author(s) |
Waugh R. |
| Title |
Pure-tone, third-octave, and octave-band attenuation of ear protectors. |
| Bibliographic information |
Dec. 1974, Vol.56, No.6, p.1866-1869. Illus. 7 ref. |
| Abstract |
The difficulties in measuring ear-protector attenuation are stressed; third-octave bands of noise appear to offer a solution to the problem. Experimental work is reported comparing pure-tone and third-octave band measurements of attenuation, calculating octave from third-octave attenuation, and finally comparing the octave-band values so calculated with pure-tone attenuation values. It is concluded that for practical purposes pure-tone and third-octave-band measurements of ear-protector attenuation are identical. The use of pure-tone attenuation values at octave-band centre frequencies as estimates of octave-band attenuation can lead to errors of more than 10dB. In the octaves centred at 500Hz and above, ear-protector attenuation should be measured at third-octave centre frequencies. |
| Descriptors (primary) |
hearing protection; evaluation of equipment; noise measurement; sound attenuation; earmuffs; noise |
| Descriptors (secondary) |
pure-tone audiometry; comparative study; sound spectrum analysis |
| Document type |
- |
| Subject(s) |
Noise, hearing and vibration
|
| Broad subject area(s) |
|
| Browse category(ies) |
Noise
Hearing protection
|
