"Do not be alarmed," she informed her staff via microphone.

Real-time interaction is possible via microphone between two or more sites.

This time, though, all but one are in the front room, listening via hidden microphone to Wolfe talk things over with the murderer.

Players that change numbers during a game must report to the referee, who will announce it via wireless microphone.

He had not been far away, listening in on the proceedings via concealed cameras and microphones.

On stage, Sarah appeared to be singing from various body parts via strategically held/placed microphones.

Spoken word via microphone or a recording on a sampler is used on occasion as well.

External samples are recorded via built-in microphone or a line-level input from another source.

The pilot and instructor can communicate with each other via headphones and microphones.

This made the organ all but non-functional, its sound being transferred into the auditorium via microphones and speakers.