2 chan PCM - Blu-ray Forum

brad1138 · 01-28-2008, 02:20 AM

I was reading in a thread from this forum that I can't find now, someone said 2 chan PCM (from optical cable) sounded better than DD or dts. Can you get surround sound from 2 chan PCM?

Thanks,
Brad

CAB · 01-28-2008, 02:24 AM

It's probably better that we can't find that thread. PCM 2.0 sounds better if the source was only 2 channel. I think I'd choose DD or DTS anything over 2 channel for a movie.

Edit: Check that - I'd choose two channel if the movie audio master was 2-channel or mono.

Clark Kent · 01-28-2008, 02:25 AM

Most receivers can apply fake surround processing like Dolby Prologic II to 2 channel PCM sources to create the illusion of 5.1 sound.

jd213 · 01-28-2008, 03:58 AM

If a stereo LPCM track is encoded with Dolby Surround as releases like the Blu-Ray for Ghost in the Shell (Japanese release) was, then Prologic II(x) will be able to decode a discreet center and mono surround channel, essentially giving you a 4.0 track.

Before I got an HDMI receiver, I preferred to have the PS3 downmix PCM 5.1/7.1 and Dolby TrueHD tracks to 2.0 LPCM stereo and let the receiver process it instead of listening to a lossy track. Pick whatever sounds best to you.

01-28-2008, 02:20 AM	#1
brad1138 Active Member Member since:Jan 2008	2 chan PCM I was reading in a thread from this forum that I can't find now, someone said 2 chan PCM (from optical cable) sounded better than DD or dts. Can you get surround sound from 2 chan PCM? Thanks, Brad

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01-28-2008, 02:24 AM	#2
CAB Blu-ray Guru Member since:Jul 2007 Location:::1 4K collection:88 Blu-ray collection:1827 Trading Score:4	It's probably better that we can't find that thread. PCM 2.0 sounds better if the source was only 2 channel. I think I'd choose DD or DTS anything over 2 channel for a movie. Edit: Check that - I'd choose two channel if the movie audio master was 2-channel or mono.

01-28-2008, 02:25 AM	#3
Clark Kent Blu-ray Prince Top contributor Member since:Oct 2007 Location:Metropolis Blu-ray reviews:2 Trading Score:184	Most receivers can apply fake surround processing like Dolby Prologic II to 2 channel PCM sources to create the illusion of 5.1 sound.

01-28-2008, 03:58 AM	#4
jd213 Special Member Member since:Sep 2007 Location:less than 10 minutes from Akihabara	If a stereo LPCM track is encoded with Dolby Surround as releases like the Blu-Ray for Ghost in the Shell (Japanese release) was, then Prologic II(x) will be able to decode a discreet center and mono surround channel, essentially giving you a 4.0 track. Before I got an HDMI receiver, I preferred to have the PS3 downmix PCM 5.1/7.1 and Dolby TrueHD tracks to 2.0 LPCM stereo and let the receiver process it instead of listening to a lossy track. Pick whatever sounds best to you.

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