![Figure 1: A diagrammatic representation of Dolby's Dynamic Range Control (DRC) process. Figure 1: A diagrammatic representation of Dolby's Dynamic Range Control (DRC) process.](https://dt7v1i9vyp3mf.cloudfront.net/styles/teaser_large/s3/imagelibrary/s/surround1dolby-1201-zUaazQiHG3_AU.V9mizhSPqdBvLavudh.gif)
Surround Sound Explained: Part 5
There's a lot more to 5.1 surround sound production than stereo with extra channels — new, bewildering terms and concepts abound. This month, we explain Metadata, Upmixing, Downmixing, and look at what that centre speaker actually does...