Blu-ray tips

1. Play Blu-ray on PC
2. Burn Blu-ray disc
3. Buy Blu-ray movies online
4. Blu-ray codec
5. Free Blu-ray software
6. Blu-ray audio formats
7. Blu-ray vs. HD DVD
8. 3D Blu-ray

Blu-ray Audio Formats Explained

bluray audio

Blu-ray comes with lossless audio quality. If you are obsessed by high quality sound experience, you are definitely love Blu-ray audio. It's again the storage that decides quality. Lossless sounds will take up tons of space on Blu-ray disc, but this is obviously not a problem for BD25 (25GB) and BD50 (50GB). Blu-ray audio thus offers up to the 7.1 channel HD sounds so that you can tell the differences even if you don't have a matching media center or home theatre system.

Blu-ray Audio Formats

DVD disc has good sound quality by using stereo Dolby surrounds, Dolby Digital 5.1 or DTS (Digital Theatre System). Blu-ray disc also supports these lossy audio formats, but lossless audio is even better than DVD quality audio. There are mainly three lossless audio codecs used in Blu-ray disc: PCM, Dolby TrueHD and DTS-HD MA.

PCM

PCM, short for Pulse Code Modulation, is also called LPCM, Linear PCM, or Uncompressed. It encodes the original master without any compression. Therefore, it takes up large amount of Blu-ray disc space. However, it carries three fronts, four surround and a low frequency effect channel at higher sampling rates and bit depth.

Dolby TrueHD

Compared to PCM, Dolby TrueHD provides the same quality but takes less space in Blu-ray disc. Unlike PCM's constant bit rate, it is a variable bit rate codec, which provides 8 full range channels 24-bit/96 kHz audio. Dolby TrueHD is the mandatory audio codec of HD DVD. Although most Blu-ray discs will encode audio with this codec, it's becoming less popular these days than DTS-HD Master Audio.

DTS-HD Master Audio

Like Dolby TrueHD, DTS-HD takes up less space on a Blu-ray disc than uncompressed PCM. DTS-HD consists of two streams: one high resolution but lossy DTS track and one DTS-HD Master Audio track which is lossless. Because DTS-HD Master Audio requires more to be processed, it usually appears in high end of Blu-ray players. If you have a separate sound system, you could choose the corresponding Blu-ray disc with DTS-HD Master Audio. Otherwise, the DTS-HD Master Audio will be possibly converted to PCM or just digital Dolby before sending to the receiver.

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Jul 05,2016 13:46 pm / Posted by Alejandro Gallet to DVD

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What is the best way to create a blu-ray audio disk with a BD-25 that will play on my two Panasconic blu-ray players? Any help will be greatly appreciated.
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