äänenpainemittari

Äänenpainemittari, also known as a sound level meter, is an instrument used to measure the intensity or magnitude of sound pressure. It is typically a portable device consisting of a microphone, an electronic circuit for signal processing, and a display. The microphone converts sound waves into electrical signals, which are then amplified and processed to indicate the sound pressure level. This level is usually expressed in decibels (dB).

Sound level meters are essential tools for various applications. In occupational health and safety, they are used to monitor noise levels in workplaces to ensure compliance with regulations and protect workers from hearing damage. They are also employed in environmental noise monitoring to assess noise pollution from sources like traffic, construction, or industrial activities. Furthermore, audio engineers and acousticians use sound level meters for sound system calibration, acoustic testing of buildings, and research purposes.

Different types of sound level meters exist, categorized by their accuracy and frequency weighting capabilities. For instance, Type 1 meters are highly accurate and suitable for precision measurements, while Type 2 meters are more general-purpose. Frequency weighting filters, such as A-weighting (dBA), are commonly used to approximate the human ear's sensitivity to different frequencies at various sound levels. The sound level meter provides objective data about sound, enabling informed decisions regarding noise control and management.