Double decoding refers to Dolby Digital AC-3 and DTS, which are the world’s two most dominant major audio codec technology.
Dolby Digital AC-3 is a popular digital stereo surround sound in the world which is developed by Dolby Laboratories, it consist of a fully digital audio compression coding system of five fully independent of the entire channel and an overweight low-frequency channel (hereinafter referred to 5.1-channel) form. With 12:1 compression ratio, 6-channel encoding of information in the process of fully digital, detail-rich, so that to reproduce the sound is more pure, more realistic performance, the effect even more sensational.
DTS is also a multi-channel compression coding technology, but it is not compatible with AC-3, DTS uses different from that of the CAC structure of AC-3 compression methods, compression ratio of 3:1, essentially lossless compression, it can keep the original the production of richer subtle signals, and therefore its reproduction of the sound field in the continuity, delicate nature of hierarchy are broad and desirable, the two became the mainstream of the international audio formats. DVD X Player supports Dolby Digital 5.1(AC-3), Digital Theater System (DTS), Dolby Surround, multi-channel decoding up to 7.1 channels. It is an amazing double-decoding DVD player, which will offer you breath taking DVD life.