ISO 4869-1:1990-Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation (Record no. 16255)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 00833nam a22001097a 4500 |
| 245 ## - TITLE STATEMENT | |
| Title | ISO 4869-1:1990-Acoustics - Hearing protectors - Part 1: Subjective method for the measurement of sound attenuation |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication | Geneva : |
| Name of publisher | International Organization for Standardization, |
| Year of publication | 1990. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Number of Pages | 12 p. |
| 505 ## - FORMATTED CONTENTS NOTE | |
| Formatted contents note | Specifies a method for measuring sound attenuation at the threshold of hearing. The procedure is designed to yield values close to the maximum attenuation which are not normally attained under field conditions. The values reflect the attenuating characteristics only to the extent that users wear the device in the same manner as did the test subjects. Data are collected at low sound pressure levels but which are also representative of the values at higher sound pressure levels. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical Term | Acoustics |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Standards |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Date acquired | Total Checkouts | Accession Number | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|
| All India Institute of Speech and Hearing | All India Institute of Speech and Hearing | 23/06/2020 | ST042 | 23/06/2020 | 23/06/2020 | Standards |