Which device is used in TV production to measure and display audio levels on an oscilloscope?

• A. VU Meter
• B. Peak Meter
• C. Wave Form Monitor
• D. Spectrum Analyzer

Answer: (C)

When you want to see how an audio signal varies over time, you look at its waveform. A waveform monitor is designed to display that time-domain representation, showing the signal’s amplitude as it rises and falls. This makes it ideal for measuring and visually assessing audio levels on an oscilloscope, because you can judge peak heights, average level, and how the signal behaves across the frame.

The other options don’t provide that time-based waveform display. A VU meter gives a single, averaged level readout, not a continuous trace. A Peak meter shows short-term peaks but doesn’t render the full waveform over time. A spectrum analyzer focuses on frequency content rather than the time-domain amplitude. Because you need a direct waveform view to gauge audio levels against the oscilloscope’s display, the waveform monitor is the best choice.