Essentially, the analog wave is a way to visually track a microphone diaphragm's movement over a specific period of time.

The clatter of metal upon metal was nearly deafening to Robin, and try as she might, she couldn't visually track what was happening.

First the seeker is cooled to operating temperature, the operator then begins visually tracking the target - using the sight unit on the launcher.

Helicopters from the carrier visually tracked the descent of the capsule and were over it two minutes after splashdown.

To test muscle strength and control, the doctor will ask you to visually track a target in different directions and observe your eye movements.

Flares located in fairings on the wing tips provided a bright source for the operator to track visually.

The reality of the situation was that instead of visually tracking a target and simply depressing a firing lug, you had to consciously aim the weapons.

Cataracts can present as a failure to develop a social smile and failure to visually track moving objects.

So the spill had to be tracked visually.

As seen in the show, the unit originally used a dry erase board in order to visually track detectives' progress at solving crimes.