What is the function of an audio processor?

The function of an audio processor is primarily to establish and manage the desired audio level of a station. This involves manipulating audio signals to ensure they maintain a consistent loudness and dynamic range, which is critical for broadcast quality. An audio processor typically uses various techniques, such as compression, limiting, equalization, and expansion, to achieve a balanced and professional sound. This control helps to prevent distortion and ensures that the output is suitable for the broadcasting medium.

While converting analog audio to digital is a function associated with audio interfaces or converters, and transmitting audio via satellite relates to transmission technology, enhancing the frequency range of audio signals is more closely aligned with equalizers than the general function of an audio processor. Therefore, establishing the desired audio levels stands out as the core responsibility of audio processing in broadcasting contexts.