略語大辞典 [E] 34 ANR active noise reduction (headset) 能動的雑音低減(ヘッドセット).active noise reduction (headset); e.g. for use in MoD(Ministry of Defence)'s Warrier fleet of combat vehicles; incorporates an electronic noise reduction system, voice operated switches and noise canceling microphones to provide for in 丸善「略語大辞典」JLogosID : 11865779