noun
voice input unit; voice input device
Technical term used in computing and electronics for hardware that accepts spoken input.
この音声入力装置は、話した言葉をテキストに変換します。
This voice input device converts spoken words into text.
音声認識 refers to speech recognition technology in general, while 音声入力装置 specifically denotes the hardware device used for voice input.
Compound of 音声 (voice) + 入力 (input) + 装置 (device). A straightforward technical term with no obscure historical derivation.