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A circle on a stem, converting sound into signal.
Also known as: Mic symbol, Sound pickup symbol
A microphone is drawn as a small circle or oval on a short stem, the mirror of the loudspeaker's job. Where a schematic uses the same outline for both, the direction of the connecting arrow says which way the energy flows.
Denotes a transducer converting sound into an electrical signal.
Contexts: Technical drawing, Electrical equipment
Is drawn as the counterpart of the loudspeaker, with signal direction rather than shape distinguishing the two in some conventions.
Contexts: Technical drawing, Electrical equipment
A small circle or rounded shape on a short straight stem, with a connection leaving the stem.