An ear-level remote microphone is a microphone which records the speaker’s voice in close proximity to the mouth (usually via a microphone worn at the lapel).
The ear-level remote microphone transmits the acoustic signal via radio waves to an earpiece worn by the listener.
This can improve the signal-to-noise ratio, the level of the speech relative to the background noise, replicating an acoustic situation where the speaker is only 30 cm from the recipient regardless of their relative positions within the room.
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