noun
Audio Response Unit; ARU
Computing term for a device or system that provides spoken responses, often in telephony or interactive voice response systems.
音声応答ユニットが電話での問い合わせに自動で答える。
The Audio Response Unit automatically answers telephone inquiries.
Compound of 音声 (voice) + 応答 (response) + ユニット (unit), a direct calque of the English term 'Audio Response Unit'.