How To: Realtime AC3 / Dolby Digital Encoding for Games

This simple how perhaps might be useful to those who are connecting their sound card to a receiver that doesn’t have analog input (like me for example) and using the Matrix Decoder on your receiver doesn’t sounds as good as using a Dolby Digital / AC3 encoded files. So what this simple how to trying to achieve is to do a realtime AC3 Encoding using software (in other word, using your CPU power to perform realtime Dolby Digital encoding) and then deliver that Dolby Digital / AC3 encoded material to your receiver. Although unfortunately it doesn’t come for free

Before i begin, please note that this tips is intended for use in Gaming only (or perhaps listening through your MP3/MP4s collection if you’re not using a music player that support realtime Dolby Digital Encoding from a plugin, like Winamp for example). Because for movie and music listening purpose the process is much simpler plus there’s no latency problem like this and you don’t need to spend money (unless you want to donate for the project) .. but i’m not going to describe the process for movie and music listening purpose here because as the title says this is for games :)

If you’re currently using below setup, then chances are you don’t need to spend $30 USD to get a realtime AC3 Encoder / Dolby Digital Encoder. But i haven’t tested it yet because i don’t have the required hardware

  • If your sound card belong to the Creative Audigy Series

    Then you can try using redocneXk combined with Creative ASIO Driver or KX Driver. As the documentation itself can be found here
  • If you have the new Creative X-Fi Series (a much better option for X-Fi series)

    Then you can spend $4.72 USD, and get the Dolby Digital Live and DTS Connect Pack from Creative Store

Otherwise, if your setup doesn’t match above configuration then unfortunately you’ll need to spend $30 USD for a software that is required for this purpose BUT if you don’t mind on spending more money and prefer to skip all this together, you can just buy Diamond Multimedia Xtreme Sound 7.1 DDL (equipped with Dolby Digital Live feature, which is unfortunately not available on where i live because there are no distributor for it here according to the official website) if you prefer a cheaper alternative to X-Fi (at least for me)