Dolby TruHD Audio or PCM Uncompressed? - Blu-ray Forum

Filmmaker85 · 12-13-2007, 10:34 PM

I keep hearing about Lossless audio, is there really a difference? I have my PS3 set to PCM Linear but my brother owns the HD-DUD drive and I don't know the difference between the two. I have my PS3's audio running from an optical can you guys tell a difference in sound?

Brent · 12-13-2007, 10:41 PM

If it's done right - if your machine is able to process the Dolby TruHD correctly (which the PS3 ought to do) - then Uncompressed Lossless PCM and Compressed, but Lossless, Dolby TruHD should sound the same.

If you are using an optical cable out of your PS3, however, you can't get either. You need to run HDMI to your receiver for full 5.1/7.1 uncompressed PCM.

Filmmaker85 · 12-13-2007, 10:46 PM

really? I guess I have to get a new receiver because mine doesn't have an HDMI port. My TV does but I doubt running the sound from my TV via HDMI to my receiver will make any difference

Jokerboy649 · 12-14-2007, 04:31 AM

Yes for me there is a large difference between PCM and whatever else there is.

Brent · 12-14-2007, 04:44 AM

Here is a decent article for you.

12-13-2007, 10:34 PM	#1
Filmmaker85 Member Member since:Apr 2007 Blu-ray collection:307	Dolby TruHD Audio or PCM Uncompressed? I keep hearing about Lossless audio, is there really a difference? I have my PS3 set to PCM Linear but my brother owns the HD-DUD drive and I don't know the difference between the two. I have my PS3's audio running from an optical can you guys tell a difference in sound?

12-14-2007, 04:44 AM	#5
Brent Member Member since:Mar 2007	Here is a decent article for you. Last edited by Brent; 12-14-2007 at 04:45 AM. Reason: correction

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12-13-2007, 10:41 PM	#2
Brent Member Member since:Mar 2007	If it's done right - if your machine is able to process the Dolby TruHD correctly (which the PS3 ought to do) - then Uncompressed Lossless PCM and Compressed, but Lossless, Dolby TruHD should sound the same. If you are using an optical cable out of your PS3, however, you can't get either. You need to run HDMI to your receiver for full 5.1/7.1 uncompressed PCM.

12-13-2007, 10:46 PM	#3
Filmmaker85 Member Member since:Apr 2007 Blu-ray collection:307	really? I guess I have to get a new receiver because mine doesn't have an HDMI port. My TV does but I doubt running the sound from my TV via HDMI to my receiver will make any difference

12-14-2007, 04:31 AM	#4
Jokerboy649 Senior Member Member since:Nov 2007 Location:Detroit Blu-ray collection:262 Blu-ray reviews:8	Yes for me there is a large difference between PCM and whatever else there is.

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