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Dolby Digital is a catchall term which includes Dolby Digital, Dolby Digital EX, Dolby Digital Live, Dolby Digital Surround EX, Dolby Digital Plus, and Dolby TrueHD.

Dolby Digital (AC-3) and Dolby Digital TrueHD (THD) is more common in cinemas, and far more common in homes.

DTS also has several variants- DTS, DTS++, DTS-HD, DTS-HD Master Audio

DTS-HD Master offers higher data rates than Dolby Digital TrueHD, and this has led to unfounded claims that DTS is better than Dolby Digital in sound quality.

However, under identical mastering conditions, the two systems are indistinguishable from one another, both being lossless formats, are bit perfect when properly decoded into Lossless PCM raw audio, producing exactly identical audio.

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Not sure what you're asking. If you're asking if Dolby Digital has a better sound encoding (higher fidelity sound), then the answer would be yes. You have Dolby Digital EX, which is on par with DTS (Not an Dolby format), that is not on every movie but can be found on DVDs. Their is also Dolby TrueHD and it's competitor DTS-HD, which can be found on most Blu-Ray movies. But you need to make sure you have a surround sound system that will support these formats. If you're asking about how Dolby Digital will sound in an open concept house, than that would be up to your set up of your surround sound system. This could mean that you will need a receiver that puts out more power and the higher quality speakers to compliment it to carry the sound through out the house. There are also other considerations to think about which would be too much for this medium. Such as speaker placement, accoustics, sound dampening, etc....


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