Sony HT-CT150 and CT350 - Page 71 - AVS Forum
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post #2101 of 2101 Old 07-25-2014, 01:49 PM
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Quote:
Originally Posted by Streifer View Post
So, in other words, there is no such thing as Prologic II encoding. Instead, if you use Handbrake, for instance, to transcode or rip a video to have a Prologic II audio track, all Handbrake is doing is adding info or flags that tell the receiver to decode the 2-channel audio track as a multi-channel audio track (i.e, simulate a surround track)?

That would explain why my receiver shows LPCM whenever it plays a ProLogic II track.
I'm a little out of my depth on this one (DaverJ has more on the encoding question above). I was coming at this from the standpoint of reading that PLII could be applied to any two channel source and watching how the CT-100 handled various signal types; my experience with PLII has always been in the post-processing realm.

I had one case where a Dolby 1.0 track was, disappointingly, coming out of the center channel only. So I set my dvd player to output PCM, which arrived at the CT100 as a 2 channel, L/R mono signal...which was then "eligible" for the ProLogicII process (meeting the 2 channel requirement for PLII). I kicked the 100 into MOVIE mode, the unit reported "PCM" with PLII in play...and a previously very thin sounding track was now being processed into fake surround with a much stronger low end. I'm not sure every DVD or Blu-ray player would ouput Dolby 1.0 as 2 channel PCM in PCM mode, but it's worth a shot if you ever get saddled with the dreaded DD 1.0 scenario.

In addition to 2 channel PCM tracks, you should also be able to see PLII engage for 2 channel Dolby sources on your 150 in any of the modes where PLII is supported.
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