Sound Power Standards

Noise regulations in Europe are covered by legislation created by the European Union. Two categories of legislation exist - basic standards and noise test codes.

Basic Standards (B standards) are fundamental standards that deal with a single aspect of noise by:

  • covering a broad range of products
  • specifying the acoustical requirements for the measurements
  • prescribing the instrumentation to be used
  • giving only general information on installation and operating conditions

Noise Test Codes (C standards) supplement the basic standards by:

  • being specific for different types of equipment
  • giving detailed requirements on installation and operating conditions
  • describing possible special adaptation (additions and exceptions to the basic standards)
  • providing declaration specifications

Two identifying marks have been created to visually indicate to a customer that a product complies with European directives on product noise.

The Noise Labeling Mark indicates that a product complies with a certain specific directive. The sound power level and/or the sound pressure level to which the product concerned conforms, must be stated on the label(s).
The CE Mark indicates that a product complies with all applicable directives. Lack of CE marking will prohibit sale of new machinery in the EU member states and in other countries that adopt the EU directives.

Further information on standards can be found via the links below.

The International Organisation for Standardisation (ISO)
The American National Standards Institute (ANSI)

We help our customers measure and manage the quality of sound and vibration in their products and in the environment

Brüel & Kjær Sound & Vibration Measurement A/S. P +45 77 41 20 00. F +45 45 80 14 05.
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