What is the primary function of a signal processor in an AV setup?

The primary function of a signal processor in an AV setup is to convert and manage input and output signals. Signal processors play a crucial role in handling various audio and video signals, ensuring that they are appropriately modified, routed, and outputted to the necessary devices. This process can involve multiple functions, such as scaling video signals, converting analog signals to digital formats, or adjusting audio signals to achieve the desired sound quality.

By managing the input and output of signals, a signal processor ensures that different components within the AV system can communicate effectively. For instance, it can take input from microphones or video cameras, process these signals by applying equalization or compression, and then output the adjusted signals to amplifiers or video displays. This makes the signal processor a vital element in ensuring that the AV experience is seamless and high-quality.

The other choices highlight functions that, while important, do not encompass the primary responsibilities of a signal processor. Amplification pertains specifically to enhancing audio signals, providing power relates to powering devices within the system, and controlling lighting is a separate function typically carried out by lighting control systems. Thus, these roles do not align with the core capabilities of a signal processor.