Customer Support: 131 242

  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

BS EN ISO 11904-2:2004

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Acoustics. Determination of sound immission from sound sources placed close to the ear Technique using a manikin
Available format(s)

Hardcopy , PDF

Superseded date

23-09-2023

Language(s)

English

Published date

18-11-2004

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement principle
5 Instrumentation
  5.1 Manikin (head and torso simulator)
  5.2 Check of calibration
  5.3 Filters
6 Determination of free-field or diffuse-field related
  equivalent continuous A-weighted sound pressure level
  6.1 Measurement of manikin sound pressure level
  6.2 Conversion to free-field or diffuse-field related
      sound pressure level
  6.3 A-weighting and summation
7 Test report
Annex A (informative) Example of sources of measurement
                      uncertainty
Annex B (informative) Example of an uncertainty analysis
Bibliography

States basic framework measurement methods for sound immission from sound sources placed close to the ear. Applies to exposure to sound from sources close to the ear, for example during equipment tests or at the workplace to sound from earphones or hearing protectors with audiocommunication facilities.

Committee
EH/1/1
DevelopmentNote
Supersedes 01/565186 DC. (12/2004)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

IEC 60942:2003 Electroacoustics - Sound calibrators
IEC 60711:1981 Occluded-ear simulator for the measurement of earphones coupled to the ear by ear inserts
IEC 60268-7:2010 Sound system equipment - Part 7: Headphones and earphones
EN 50332-1:2013 Sound system equipment: Headphones and earphones associated with personal music players - Maximum sound pressure level measurement methodology - Part 1: General method for "one package equipment"
IEC 60268-1:1985 Sound system equipment. Part 1: General
ISO 11904-1:2002 Acoustics — Determination of sound immission from sound sources placed close to the ear — Part 1: Technique using a microphone in a real ear (MIRE technique)
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters

View more information
$407.85
Including GST where applicable

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Need help?
Call us on 131 242, then click here to start a Screen Sharing session
so we can help right away! Learn more