What device is used for real-time measurement of noise levels in the environment?

The Sound Level Meter (SLM) is specifically designed to provide real-time measurements of noise levels in the environment. This device captures the sound pressure levels and provides readings typically expressed in decibels (dB). SLMs are often used in various settings, from workplace assessments to environmental monitoring, allowing for immediate feedback on noise exposure.

The SLM typically features a microphone that detects sound waves, and its readings reflect the sound intensity and frequency characteristics of the noise present at a given moment, making it suitable for compliance monitoring, noise control assessments, and research.

Other devices listed serve different purposes; for example, a noise dosimeter measures the cumulative exposure to noise over a period but does not provide immediate readings like an SLM does. A decibel converter refers more to tools translating sound levels into decibel readings rather than measuring them directly. A frequency analyzer, while important for assessing certain audio characteristics, typically focuses on analyzing the frequency components of sounds rather than providing a straightforward measurement of noise levels in real-time.