BS EN ISO 11904-2:2004
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Acoustics. Determination of sound immission from sound sources placed close to the ear Technique using a manikin
Hardcopy , PDF
23-09-2023
English
18-11-2004
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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Superseded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 |
| Standards | Relationship |
| ONORM EN ISO 11904-2 : 2005 | Identical |
| I.S. EN ISO 11904-2:2004 | Identical |
| DIN EN ISO 11904-2:2005-02 | Identical |
| NF EN ISO 11904-2 : 2005 | Identical |
| UNE-EN ISO 11904-2:2005 | Identical |
| UNI EN ISO 11904-2 : 2005 | Identical |
| EN ISO 11904-2:2004 | Identical |
| SN EN ISO 11904-2 : 2005 | Identical |
| NS EN ISO 11904-2 : 1ED 2005 | Identical |
| NBN EN ISO 11904-2 : 2005 | Identical |
| NEN EN ISO 11904-2 : 2004 | Identical |
| ISO 11904-2:2004 | Identical |
| 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 |
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