Cart (0)
  • No items in cart.
Total
$0
There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.
Home
Content
Tour
eLibrary
Store
Search book title
Filters:
BOOKS
All Books
PACKAGES
All Packages
EDITION
to
PUBLISHER
AABC
(1)
AAMI
(353)
ACI
(651)
AECDAILY
(599)
AISC
(58)
ASA
(290)
ASCE
(1053)
ASHRAE
(728)
ASME
(2285)
ASSE
(117)
ASTM
(97896)
AWC
(58)
AWWA
(641)
BHMA
(137)
BICSI
(35)
BIFMA
(28)
BOMA
(20)
BSI
(99791)
CRSI
(18)
IAHSS
(1)
IAPMO
(396)
ICC
(328)
IEC
(10763)
IEEE
(7368)
IES
(264)
ISEA
(21)
ISO
(24378)
Joint Commission
(198)
Joint Commission Int.
(1)
NEMA
(910)
NETA
(7)
NFPA
(1722)
TCNA
(23)
TMS
(19)
USGBC
(28)
WILEY
(4)
 
AR
(6)
AZ
(7)
CA
(128)
CO
(1)
CT
(3)
FL
(58)
ID
(5)
IL
(5)
IN
(1)
KY
(1)
LA
(2)
MI
(28)
MN
(27)
NC
(36)
NJ
(13)
NY
(71)
OH
(24)
OR
(25)
PA
(7)
RI
(8)
SC
(20)
SD
(1)
TX
(3)
VA
(50)
VT
(6)
WA
(34)
CONTENT TYPE
 Act
 Admin Code
 Announcements
 Bill
 Book
 CADD File
 CAN
 CEU
 Charter
 Checklist
 City Code
 Code
 Commentary
 Comprehensive Plan
 Conference Paper
 County Code
 Course
 DHS Documents
 Document
 Errata
 Executive Regulation
 Federal Guideline
 Firm Content
 Guideline
 Handbook
 Interpretation
 Journal
 Land Use and Development
 Law
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Manual
 Model Code
 Model Standard
 Notice
 Ordinance
 Other
 Paperback
 PASS
 Periodicals
 PIN
 Plan
 Policy
 Product
 Product - Data Sheet
 Program
 Provisions
 Requirements
 Revisions
 Rules & Regulations
 Standards
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Statute
 Study Guide
 Supplement
 Sustainability
 Technical Bulletin
 All
  • ISO
    ISO 28961:2012 Acoustics - Statistical distribution of hearing thresholds of otologically normal persons in the age range from 18 years to 25 years under free-field listening conditions
    Edition: 2012
    $192.38
    / user per year

Content Description

ISO 28961:2012 provides descriptive statistics, percentiles, of the hearing threshold distribution whose mean is the reference threshold value specified in ISO 226 and ISO 389-7. The mean and percentile thresholds are specified under the following conditions: a) the sound field in the absence of the listener consists of a free progressive plane wave (free field); b) the sound source is directly in front of the listener (frontal incidence); c) the sound signals are pure (sinusoidal) tones; d) the sound pressure level is measured in the absence of the listener at the position where the centre of the listener's head would be; e) listening is binaural; f) the listeners are otologically normal persons within the age range 18 years to 25 years inclusive.

The percentiles are given in numerical form for the preferred frequencies in the one-third-octave series from 20 Hz to 16 000 Hz inclusive, in accordance with ISO 266, and for some intermediate audiometric frequencies.

The percentiles are applicable to the assessment of an individual's hearing in relation to the distribution of hearing thresholds under the above conditions. The percentiles can also be used to evaluate the audibility of low-level noise around hearing threshold.



About ISO

ISO, the International Organization for Standardization, brings global experts together to agree on the best way of doing things – for anything from making a product to managing a process. As one of the oldest non-governmental international organizations, ISO has enabled trade and cooperation between people and companies all over the world since 1946. The International Standards published by ISO serve to make lives easier, safer and better.
GROUPS
X