ääniteholuokkaa

Ääniteholuokka (sound power class) is a Finnish term referring to a classification system for the sound power emitted by machinery. This classification is used to indicate the potential noise a machine can produce, aiding in noise control and selection processes. It is typically determined through standardized measurement procedures.

The concept of ääniteholuokka is closely related to the European Union's Ecodesign directive, which aims to reduce the environmental impact of products, including noise emissions. While the term itself is Finnish, the underlying principles and measurement methods are often harmonized with international standards such as ISO 3744 or ISO 3745. These standards define how to accurately measure the sound power of a source in a controlled environment.

Ääniteholuokka is usually expressed in decibels (dB), specifically as sound power level (Lw). A lower ääniteholuokka indicates a quieter machine, making it a valuable metric for consumers and professionals alike when comparing different products. For instance, when purchasing appliances like washing machines or vacuum cleaners, users can often find information on their ääniteholuokka to choose models that are less noisy. Manufacturers are required to provide this information for certain product categories. This classification helps in creating quieter living and working environments by promoting the use of less sound-intensive equipment.