2012-02-06, 18:56
nikc0069 Wrote:Likely being thick here, but if I want my amp to do all the processing, should I set dts to lpcm or decoded? Won't decoded just work my cpu past what it is comfortable with? (only had a quick look at this last night so please forgive me if I've missed something obvious here)
LPCM vs. Decoded?
Do you mean LPCM vs. Bitstream?
If you want your amp to do the 'lifting' then you have to use bitstream, as it sends the raw data to the amp for decoding.
LPCM means that the stream is decoded on the PC and then sent to your amp as audio information.
Both should sound identical unless there is something in the decoding that is messed up.
Remember that XBMC, without something like this generous work, does not convert DTS-MA to LPCM anyways, and it also cannot bitstream it. It simply sends the core DTS as bitstream data. For Dolby True, XBMC has had the ability (at least in Windows) to decode Dolby True-HD to LPCM and send it to the AVR for quite a long time now.
The problem is that there are something like 9 titles with DTS-MA for every one that is out there with Dolby True, so bitstream/LPCM decode of DTS-MA has been very very desirable for XBMC for quite a long while... at least for those of us who rip our own BDs and have good surround setups.