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, 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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