Definition
A device that converts electrical energy into sound waves, or sound waves into electrical energy. Common aviation examples include headphone speakers (electrical signal to sound) and microphones (sound to electrical signal).
Plain English
A part that turns electricity into sound, or sound into electricity. Headphones and microphones are the everyday examples.
Context Anchor
Seen in aircraft radio, headset, microphone, speaker, intercom, and audio warning system discussions.
Derivation
From 'electro' (electricity) and 'acoustic' (relating to sound), combined with 'transducer' — from the Latin 'transducere,' meaning 'to lead across.' A transducer leads energy across from one form to another. Here, it carries energy across between electrical signals and sound.
Why Pilots Care
It enables voice communication through headsets and radios during flight.
Intuition Check
Do not think of it as only a speaker. A microphone is also an electroacoustic transducer because it changes sound into an electrical signal.
Example Sentence 1
The microphone in the pilot's headset is an electroacoustic transducer that converts the spoken voice into an electrical signal for the radio.
Example Sentence 2
Maintenance checks ensure the electroacoustic transducer in the intercom produces clear audio without distortion.