Brüel & Kjær - Sound Power and Noise Source Identification

Sound Power

Noise emission values are increasingly becoming marketable items for machines, equipment and appliances - low noise emissions directly relate to lower noise exposure for product users and bystanders. Retail customers, both private and corporate, appreciate this relationship and are, therefore, more aware of noise emission declarations on goods when deciding their purchases.

Sound power has become the preferred quantity to measure when determining product noise emissions. This is because it is an absolute quantity, dependent only on the noise source itself, and independent of the acoustic environment.

Noise Source Identification

Before you can determine what design changes are appropriate to reduce the noise emitted by a product, you need to be able to characterise it in terms of:

Spectral content
The location of the dominant sources
The relative importance of dominant sources

Noise Source Identification employs a number of tools to perform such a characterisation.

Category:

Science & Technology

Tags:

• noise source identification
• Sound Power
• Brüel & Kjær
• wind turbine
• Sound mapping
• energy labels
• train pass-by
• Lawnnmower
• Lw &NSI
• Extractor fan
• Go-Kart beamforming
• aircraft noise mapping