showstack / glossary / iem
IEM (in-ear monitor) 入耳式監聽
A personal monitor mix sent to a performer over a body-pack receiver and moulded or universal earpieces, instead of a wedge on the deck. Each mix needs its own RF channel, so a band on IEMs plus radio mics is a frequency coordination job before it is an audio one.
中文
以腰包接收機與訂製或通用耳機送給表演者的個人監聽混音，取代放在台面的地板監聽。每一路混音需要一組獨立的無線頻率，因此樂團同時使用 IEM 與無線麥克風時，先是頻率協調問題，其次才是混音問題。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | IEMs / in-ears | |
| HK / TW | 入耳式監聽 / IEM / 耳機監聽 |
Easy to get wrong
IEM transmitters and radio mic receivers occupy the same spectrum from opposite directions. Plan them as one frequency plan, not two, or the transmitters will sit on top of the mics.
Next to this
Monitor wedge地面監聽（wedge）The angled floor loudspeaker pointed at a performer so they hear themselves. Each mix a monitor engineer runs…Line check線路檢查Verifying every input reaches the console: mic by mic, DI by DI, before anyone plays a note. A soundcheck wit…
Sources
- Theatrecrafts glossary of technical theatre terms — Theatrecrafts / ABTT heritage primary
Understand the mechanism
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