Dynamic compression is a crucial audio processing technique used to reduce the dynamic range of an audio signal. In the context of advertising, it plays a vital role in mastering audio spots for commercial radio and other platforms, ensuring clarity and impact.

At its core, dynamic compression is the process by which an audio processor or a Virtual Studio Technology (VST) plugin decreases the difference between the loudest peaks and the softest moments of an audio signal. For radio broadcasting, this technique is strictly applied to seamlessly blend the voice of an announcer with any background music or sound effects. This ensures that the message maintains a solid, impactful presence and remains clear and audible, even when played through small speakers or in environments with significant background noise.