What is the role of a limiter in audio signal processing?

A limiter is an essential tool in audio signal processing that serves to prevent audio signals from exceeding a specified threshold level. This is crucial in maintaining audio integrity and preventing distortion or clipping that can occur when signals are too loud. By setting a maximum level for the audio signal, the limiter ensures that the output stays within a controllable range, allowing for a cleaner sound even when signals fluctuate.

In live sound situations or music production, limiters are often used to protect speakers and other audio equipment from damage due to sudden loud peaks in the audio signal. This protection is important for achieving a well-balanced sound without risking equipment failure. The functionality of a limiter allows audio engineers to maintain dynamic range without sacrificing audio quality, making it a vital component in any professional audio setup.