‘录音’ (lù yīn) is a noun meaning 'audio recording' — the act or product of capturing sound, such as speech, music, or ambient noise. The first character 录 (lù) means 'to record' or 'to register', and the second character 音 (yīn) means 'sound' or 'tone'. Together, they literally mean 'recording of sound', emphasizing the audio-specific nature of the recording — distinct from video or written records.

This word is commonly used in everyday contexts: students may make a 录音 of a lecture to review later; journalists use it for interviews; musicians refer to studio recordings as 录音. It can function as both a countable noun (e.g., 一段录音 — 'a recording') and an uncountable concept (e.g., 录音功能 — 'recording function'). While often used as a standalone noun, it also appears in compounds like 录音笔 (voice recorder) and 录音机 (tape recorder).