What is the function of a mixer in an AV system?

The function of a mixer in an AV system is to combine multiple audio signals into a single output. This allows audio from various sources—such as microphones, instruments, and playback devices—to be managed and balanced effectively. The mixer processes these inputs, enabling adjustments to volume, tone, and effects, which results in a cohesive audio output that can be sent to speakers or recording devices. This role is crucial in live sound reinforcement and recording environments, as it ensures that all audio sources are heard clearly and are proportionately mixed for optimal listening experiences. The ability to blend different sound sources effectively allows for greater creativity and control in audio production.