lydenivåmålere

A lydenivåmåler, also known as a sound level meter or decibel meter, is an instrument used to measure the level of ambient sound. It is commonly used in occupational health and safety to monitor noise exposure, as well as in environmental noise assessments, concert sound checks, and research. The device typically consists of a microphone, an amplifier, a signal processor, and a display.

The microphone converts sound pressure waves into an electrical signal. This signal is then amplified and processed to provide a reading in decibels (dB). Most sound level meters offer different weighting filters, such as A-weighting (dBA) and C-weighting (dBC), which approximate the human ear's sensitivity to different frequencies. A-weighting is most commonly used for measuring environmental and occupational noise, as it emphasizes frequencies that are more audible to humans. C-weighting is used for measuring higher noise levels and is more sensitive to low-frequency sounds.

Sound level meters can display instantaneous sound levels, peak levels, and often average levels over a period of time. Some advanced models can also record data, analyze frequency content, and differentiate between various types of noise. Calibration is crucial for accurate measurements, and sound level meters should be regularly calibrated using a sound calibrator to ensure their readings are precise. The choice of sound level meter depends on the application, with different classes of meters offering varying degrees of accuracy and features.