Thermophone
A thermophone is a type of transducer that converts an electrical signal into heat, which then becomes sound. It can be thought of as a type of loudspeaker that uses heat fluctuations to produce sound, instead of mechanical vibration.
A thermophone is a type of transducer that converts an electrical signal into heat, which then becomes sound. It can be thought of as a type of loudspeaker that uses heat fluctuations to produce sound, instead of mechanical vibration.
A thermophone is a type of transducer that converts an electrical signal into heat, which then becomes sound. It can be thought of as a type of loudspeaker that uses heat fluctuations to produce sound, instead of mechanical vibration.
Source: Wikipedia "Thermophone" · CC BY-SA 4.0
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