ECMA 108 : 6ED 2016
Current
The latest, up-to-date edition.
DETERMINATION OF HIGH-FREQUENCY SOUND POWER LEVELS EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
Hardcopy
English
12-01-2016
1 Scope
2 Conformance
3 Normative references
4 Terms and definitions
5 Requirements for measurements in
a reverberation test room
6 Method using measured reverberation time
7 Method using calculated air absorption
8 Method using a reference sound source
9 Method using a free field over a reflecting plane
10 Calculation of sound power level under
reference meteorological conditions
11 Measurement uncertainty
12 Information to be recorded
13 Information to be reported
Annex A (normative) - Calculation of air
absorption coefficient
Bibliography
This Standard ECMA-108 specifies four methods for the determination of the sound power levels of highfrequency noise emitted by information technology and telecommunications equipment in the frequency range covered by the octave band centred at 16 kHz, which includes frequencies between 11,2 kHz and 22,4 kHz.
| Committee |
TC 26
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
European Computer Manufacturers Association
|
| Status |
Current
|
| 17/30359986 DC : 0 | BS EN ISO 7779 - ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT |
| EN ISO 7779:2010 | Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment (ISO 7779:2010) |
| DIN EN ISO 7779:2011-01 | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT |
| ECMA 74 : 14ED 2017 | MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT |
| BS EN ISO 7779:2010 | Acoustics. Measurement of airborne noise emitted by information technology and telecommunications equipment |
| ANSI/ASA S12.10 PART 1:2010(R2020) | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 1: DETERMINATION OF SOUND POWER LEVEL AND EMISSION SOUND PRESSURE LEVEL |
| I.S. EN ISO 7779:2010 | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT |
| ECMA/TR 62 : 1ED 93 | PRODUCT NOISE EMISSION OF COMPUTER BUSINESS EQUIPMENT |
| ISO 7779:2010 | Acoustics — Measurement of airborne noise emitted by information technology and telecommunications equipment |
| ECMA/TR 27 : 2ED 95 | METHOD FOR THE PREDICTION OF INSTALLATION NOISE LEVELS |
| ANSI/ASA S12.10 PART 1 : 2010 | ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT - PART 1: DETERMINATION OF SOUND POWER LEVEL AND EMISSION SOUND PRESSURE LEVEL |
| UNE-EN ISO 7779:2011 | Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment (ISO 7779:2010) |
| ISO 3744:2010 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Engineering methods for an essentially free field over a reflecting plane |
| ISO 9613-1:1993 | Acoustics — Attenuation of sound during propagation outdoors — Part 1: Calculation of the absorption of sound by the atmosphere |
| ISO 6926:2016 | Acoustics — Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels |
| ISO 3741:2010 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for reverberation test rooms |
| ISO 3745:2012 | Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms |
| ISO 7779:2010 | Acoustics — Measurement of airborne noise emitted by information technology and telecommunications equipment |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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