audio
/ˈɔːdɪəʊ/noun
mass noun［usu. as modifier］
- sound, especially when recorded, transmitted, or reproduced（尤指被录制、播送或复制的）音频信号; 声音：
audio equipment
音响器材
the machine can retrieve and play audio from a CD-ROM.
这台机器可以从光盘只读存储器检索并播放音频信号。
词源
1930s: independent usage of AUDIO-.