Membranophones produce sound by which mechanism?

• A. Vibrating strings
• B. Air vibrating inside a wind column
• C. Membrane-covered resonating surface
• D. Electronic oscillation

Answer: (C)

Membranophones produce sound when a stretched membrane itself vibrates. When the drumhead is struck, the membrane moves back and forth, and its vibration transfers energy to the surrounding air, creating sound waves. The membrane’s tension, thickness, and size shape the pitch and timbre of the instrument. This distinguishes membranophones from other families: strings vibrate in chordophones, vibrating air columns in aerophones produce sound, and electronic oscillations in electrophones generate sound electronically. So the mechanism at work is the vibration of a membrane-covered resonating surface.