AC3是一种使用音频编解码器3的音频文件格式。杜比数码公司开发的AC3提供环绕声体验。它主要用于DVD或蓝光光盘。它支持6个频道的音乐，可以提供6种不同的音效。这种有损格式有效地对环绕声系统进行编码。
AC3 is an audio file format that uses Audio Codec 3. Dolby Digital developed AC3 that gives a surround sound experience. It is mostly used in DVD or Blue-Ray disks. It supports 6 Channels music and can provide 6 different sound effects. This lossy format effectively encodes the surround sound system.
