What are the Common multi-channel audio track specifications?

Celine2020

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What are the Common multi-channel audio track specifications? Dolby AC3 and DTS are surround sound encodings in the DVD era. DTS occupies a place by virtue of the bit rate advantage of the latecomer. The AV power amplifier at this time uses optical fiber and coaxial transmission AC3 and DTS source code. In the era of BD and HD DVD (2008), even if these two brothers were invited to the altar, Dolby mixed the existing MLP (DVD-Audio audio track) encoding with Ac3 to become Dolby TrueHD. Lossless multi-channel surround sound tracks, while maintaining compatibility. EAC3 has more two-channel support capability, the bit rate is also higher, and the application on the network has also increased.

Dolby AC3 and DTS


DTS has something to learn. DTS HDMA also includes the DTS core, which is lossless and backward compatible. With high codes to win, it is also surging in the BD era. As for the lossy DTS HD HR is rare, but some Japanese animation Blu-ray will be used.

Dolby AC3 and DTS: Common multi-channel audio track specifications developments

Dolby AC3 and DTS

When Dolby introduced Atmos, it changed the gameplay and no longer expanded the code rate or the number of channels, and came up with "object-based audio coding", but it still expanded the sky channel, so that the horizontal sound field expanded the height. .

This is because UHD discs need to reserve bandwidth for the video, and it is impossible to make the audio track unrestricted. On the other hand, it is too stupid to increase the Dolby audio positioning by adding channels. These additional Dolby information inserted in the existing encoding It is enough to express the occasional Dolby sounds in the film, such as thunder, plane takeoff, etc. I guess it may be some recorded clips and position information, which are integrated into different channels by the amplifier according to the actual sound configuration of the user.

And Atoms is also based on Dolby EAC3 and TrueHD corresponding to the streaming media and UHD disc market, jointly leading the Dolby Vision of HDR image technology, showing the appearance of Dolby.
 
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