A microphone converts sound waves (specifically longitudinal mechanical sound waves in air or another medium) into electrical signals.

Core idea

  • Sound in air travels as longitudinal mechanical waves: areas of compression and rarefaction that change air pressure over time.
  • The microphone’s diaphragm moves back and forth with these pressure changes and a transducer inside turns that motion into a matching electrical signal.

Quick Scoop

  • Type of waves: Longitudinal sound waves (mechanical pressure waves in a medium like air).
  • What the mic does: Converts those sound waves into an electrical audio signal that varies in step with the original sound.
  • Why it matters: This is the first step in recording, broadcasting, or transmitting your voice or music digitally or over analog systems.

TL;DR: A microphone converts longitudinal mechanical sound waves in a medium (usually air) into corresponding electrical signals.

Information gathered from public forums or data available on the internet and portrayed here.