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ECMA/TR 27 : 2ED 95

Current
Current

The latest, up-to-date edition.

METHOD FOR THE PREDICTION OF INSTALLATION NOISE LEVELS
Published date

01-12-2013

1 Scope
2 References
3 Acoustical terminology
  3.1 General
  3.2 The nature of sound
  3.3 The decibels scale
4 Glossary
  4.1 Sound pressure, p, in pascals
  4.2 Sound pressure level, L[p], in decibels
       4.2.1 Single machine
       4.2.2 Adding sound pressure levels
  4.3 Equivalent continuous sound pressure level, L[peq],
       in decibels
  4.4 A-weighted sound pressure level, L[pA], in decibels
  4.5 C-weighted peak sound pressure level, L[pCpeak]
  4.6 Sound power, W in watts
  4.7 Sound power level, L[W],in decibels
  4.8 A-weighted sound power level, L[WA], in decibels
  4.9 Noise emission
  4.10 Emission sound power level and sound pressure level
  4.11 Declared noise emission values
       4.11.1 Declared sound power level, L[WAd], in bels
       4.11.2 Declared sound pressure level, L [pAM], in
              decibels
  4.12 Noise immission
  4.13 Rating sound level, L[r], in decibels
5 Noise emission
  5.1 General
  5.2 Measurement of noise emission
  5.3 Use of noise emission values
6 Noise immission
  6.1 General
  6.2 Determination of noise immission
  6.3 Use of noise immission values
7 Installation noise
  7.1 General
  7.2 Measurement of the installation noise level
  7.3 Prediction of the installation noise level
       7.3.1 Overview and assumptions of the method
       7.3.2 Guidance through the method
       7.3.3 Room categories
       7.3.4 Prediction methods
       7.3.5 Adjustments for screens
       7.3.6 Multiple equipment in a room
       7.3.7 Adjustments for background noise
       7.3.8 Calculations for several locations of
              interest
  7.4 Actual installation noise level
  7.5 Rating level
Annex A - Corrections for the determination of the
          installation noise level
Annex B - Absorption coefficients of some typical
          building materials
Annex C - Supplementary information on the prediction
          theory
Annex D - Bibliography
Annex E - Computer programs for installation noise
          prediction

Defines a method for the prediction of installation noise levels which takes into account the acoustical properties of the room in which computer and business equipment is installed, the location(s) of the noise emitting equipment and their noise emission level(s).

Committee
TC 26
DocumentType
Technical Report
PublisherName
European Computer Manufacturers Association
Status
Current

UNE-EN ISO 7779:2011 Acoustics - Measurement of airborne noise emitted by information technology and telecommunications equipment (ISO 7779:2010)
UNI EN ISO 7779 : 2010 ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ECMA 160 : 2ED 92 DETERMINATION OF SOUND POWER LEVELS OF COMPUTER AND BUSINESS EQUIPMENT USING SOUND INTENSITY MEASUREMENTS; SCANNING METHOD IN CONTROLLED ROOMS
I.S. EN ISO 7779:2010 ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
BS ISO 9296:2017 Acoustics. Declared noise emission values of information technology and telecommunications equipment
17/30359986 DC : 0 BS EN ISO 7779 - ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ANSI S12.10:2002(R2007) ACOUSTICS - MEASUREMENT OF AIRBORNE NOISE EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
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
ECMA 109 : 7ED 2016 DECLARED NOISE EMISSION VALUES OF INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ANSI S12.10 : 2002 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)
BS EN ISO 7779:2010 Acoustics. Measurement of airborne noise emitted by information technology and telecommunications equipment
ISO 9296:2017 Acoustics — Declared noise emission values of information technology and telecommunications equipment
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
14/30291684 DC : 0 BS ISO 9296 - ACOUSTICS - DECLARED NOISE EMISSION VALUES OF INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS
ECMA/TR 62 : 1ED 93 PRODUCT NOISE EMISSION OF COMPUTER BUSINESS EQUIPMENT
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

ECMA 160 : 2ED 92 DETERMINATION OF SOUND POWER LEVELS OF COMPUTER AND BUSINESS EQUIPMENT USING SOUND INTENSITY MEASUREMENTS; SCANNING METHOD IN CONTROLLED ROOMS
ECMA 108 : 6ED 2016 DETERMINATION OF HIGH-FREQUENCY SOUND POWER LEVELS EMITTED BY INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT
ECMA/TR 62 : 1ED 93 PRODUCT NOISE EMISSION OF COMPUTER BUSINESS EQUIPMENT
ECMA 109 : 7ED 2016 DECLARED NOISE EMISSION VALUES OF INFORMATION TECHNOLOGY AND TELECOMMUNICATIONS EQUIPMENT

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