ECMA/TR 62 : 1ED 93

1 Scope
2 References
3 Acoustical terminology
   3.1 General
   3.2 The nature of sound
   3.3 The decibel 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[pC[peak]], in decibels
   4.6 Sound power, W, in watts
   4.7 The 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
               bets
        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 versus noise immission
6 Product categories
   6.1 General
   6.2 Description of product categories
7 Product noise emission
   7.1 Declaration of product noise emission
   7.2 European product noise emission declaration
        requirement
   7.3 European requirement for work with display
        screen equipment
   7.4 Product noise emission specifications
8 User environments
   8.1 Manufacturing/Utility Area
   8.2 Data Processing Area
   8.3 General Business Area
   8.4 Commercial (or Special) Office Area
   8.5 Quit Office/Professional Office Area
9 Work station requirements
Annex A Addition of noise levels
Annex B Interrelationship
Annex C Product noise emission declaration - Examples
        of noise emission declarations
Annex D Product noise emission value for categories
        of computer and business equipment
Annex E Recommended upper limits of declared sound
        power values

Defines an overview of the latest developments in noise control standards and the interpretation of noise emission values of computer and business equipment. Also describes the standardized quantities for the measurement and declaration of product noise emission of such equipment. This information may be useful when comparing the noise emission of equipment of the same product category as well as of different equipment used in the same environment.