Good morning everyone. I was turned on to Audiohlics via my AV vender. I have always wanted to know how do I know what format the audio source is coded? I don’t know rather the tv show is dts or prologic. What format is my 4kdvd. Are DVDs formatted in multiple codecs? Will my receiver automatically switch to the correct incoding method?
Pardon me if I used some wrong terminology.
Thank you
TV via cable, Ota, or satellite is almost always Dolby Digital 5.1 at 448kbps. This is obviously lossy, but not bad at all. Blu-ray and the UHD Blu-ray counter part are either DTS HD-MA or Dolby Truehd. Both are lossless 24/48 masters of the original audio track mixed in the studio and there is absolutely no difference between them. Truehd can also be mixed as an object based format known as Atmos. Instead of it being mixed as 5.1/7.1, the individual sounds are objects in a virtual 3D space, your avr will tell the renderer where you have your speakers setup and it will render them to the appropriate speakers. If you have an Atmos bluray but don't have an Atmos capable receiver, the original soundtrack is backwards compatible and you still get the 5.1/7.1 prebaked object mix rendered during the encoding to 5.1/7.1 channels, so you still benefit from Atmos even without an Atmos avr.
DTS X was supposed to be similar, but in reality, it's mainly an 11.1 channel based mix with front and rear height speakers.
Prologic II/x/Z simply extracts channels when there are none. This allows you to get pseudo surround sound from something like a stereo mix. The new upmixer included with Atmos is called Dolby surround, and can extract heat from heights as well as surrounds and a center. When used with 5.1 content on an Atmos setup, it imparts a very believable bubble of surround, when used with stereo content, it is almost as good as discrete 5.1 in my experience, and way better than prologic II.
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