この際デュナメスはまったく関係ないのですが、相手をロックオンして音を聞かせるスピーカーが開発されましたよ。その名も「オーディオ・スポットライト」。 (via ロックオンして目標を狙い撃つスピーカー（動画） : Gizmodo Japan（ギズモード・ジャパン）, ガジェット情報満載ブログ
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超指向性スピーカー
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狙い撃つぜ！
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