In an audio mixing console, what is the function of the channel assign switch?

The function of the channel assign switch on an audio mixing console is primarily to set the output destination for the audio signal coming from that particular channel. This means that by using the channel assign switch, an operator can determine where the audio signal will be routed, such as which bus or output channel it will be sent to for further processing, recording, or amplification.

Assigning channels is crucial in a mixing environment because it allows for flexibility in managing audio signals. For example, if an operator wants to send vocals to a group output for processing or to the main output mix, the channel assign switch enables this routing. This capability is integral for ensuring that the audio mix is well-balanced and organized.

The other functions mentioned in the choices do not relate directly to the assign switch. Selecting the audio source pertains to choosing which input the channel will receive its signal from. Adjusting input gain deals specifically with control over the signal level coming into the channel. Muting the channel is a separate action that silences the audio signal without affecting its routing or gain. Each of these functions is important in its own right, but they serve different purposes than what the channel assign switch is designed for.