A sound level meter is a device used to measure the intensity of sound in decibels (dB). It helps assess noise levels in various environments, such as workplaces, concerts, and public spaces. By capturing sound pressure levels, it provides valuable data for ensuring compliance with noise regulations and protecting hearing health. These meters typically consist of a microphone, an amplifier, and a display. They can be handheld or installed permanently in a location. Many models also feature different weighting scales, like A-weighting, which adjusts the readings to reflect human hearing sensitivity, making them useful for various applications.