Interesting Observation of Bitstreaming or Linear PCM - Blu-ray Forum

Bruiser2007 · 12-14-2007, 10:29 PM

Why is it that there are a few DVDs in my collection that sound better when I send a Bitstream from my PS3 to my Onkyo 705 to hear Dolby Digital soundtracks??

Many sound fine through Linear PCM but I must say that the Lord of the Rings: Fellowship of the Ring sounded much more satisfying with deeper bass when I set my PS3 to Bitstream over HDMI.........

Obviously I listen to Blue Ray's lossless audio via LPCM but my DVD collection is certainly bigger. Any ideas??

I have no problem setting my PS3 to Bitstream at present but was wondering what all you though..

Cheers!

crackinhedz · 12-14-2007, 10:35 PM

Quote:

Originally Posted by Bruiser2007

I have no problem setting my PS3 to Bitstream at present but was wondering what all you though..

you can also toggle back and forth during a movie...hit the triangle button

and go to AV Settings

...in case you didnt already know.

sokrman14 · 12-14-2007, 10:36 PM

Also, when you send a bitstream, the receiver is doing the decoding, and when you send PCM the player is doing decoding. So, the receiver you have probably has better decoders as well to enhance sound quality.

Bruiser2007 · 12-14-2007, 11:11 PM

I actually forgot about that shortcut, crack. Thanks for the reminder...

Glad to see that it is nothing really wrong with my setup. Probably is true that the Onkyo can decode better than the PS3 alone...

un4gvn94538 · 12-14-2007, 11:18 PM

Quote:

Originally Posted by sokrman14

Also, when you send a bitstream, the receiver is doing the decoding, and when you send PCM the player is doing decoding. So, the receiver you have probably has better decoders as well to enhance sound quality.

enhance it how? i recieved an email from dolby labs stating that there is no quality differences of true hd between pcm and bitstream.

Bruiser2007 · 12-14-2007, 11:24 PM

I think he is referring to the tried and true Dolby Digital and DTS (Lossy) codecs....

un4gvn94538 · 12-14-2007, 11:29 PM

that may be, but what i got out of the email from dolby labs is that is the same quality no matter how its sent. so why would it change for dd?

Bruiser2007 · 12-15-2007, 01:07 AM

Good question.......All I can say is what I am hearing......Sometimes (Not at all times) letting the receiver decode the PS3 bitstream for DD or DTS does sound fuller at times than passing this over LPCM...Weird indeed....

un4gvn94538 · 12-15-2007, 01:24 AM

maybe....all i noticed is that it maybe a little louder.

gearyt · 12-15-2007, 08:50 PM

Maybe it is changing from multi to THX mode and removing the bass/treble ?

12-14-2007, 10:29 PM	#1
Bruiser2007 Member Member since:Nov 2007	Interesting Observation of Bitstreaming or Linear PCM Why is it that there are a few DVDs in my collection that sound better when I send a Bitstream from my PS3 to my Onkyo 705 to hear Dolby Digital soundtracks?? Many sound fine through Linear PCM but I must say that the Lord of the Rings: Fellowship of the Ring sounded much more satisfying with deeper bass when I set my PS3 to Bitstream over HDMI......... Obviously I listen to Blue Ray's lossless audio via LPCM but my DVD collection is certainly bigger. Any ideas?? I have no problem setting my PS3 to Bitstream at present but was wondering what all you though.. Cheers!

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12-14-2007, 10:36 PM	#3
sokrman14 Special Member Member since:Mar 2006 Location:Omaha, NE Home Theater Gallery:9 Blu-ray collection:32 Blu-ray reviews:1 Trading Score:1	Also, when you send a bitstream, the receiver is doing the decoding, and when you send PCM the player is doing decoding. So, the receiver you have probably has better decoders as well to enhance sound quality.

12-14-2007, 11:11 PM	#4
Bruiser2007 Member Member since:Nov 2007	I actually forgot about that shortcut, crack. Thanks for the reminder... Glad to see that it is nothing really wrong with my setup. Probably is true that the Onkyo can decode better than the PS3 alone...

12-14-2007, 11:24 PM	#6
Bruiser2007 Member Member since:Nov 2007	I think he is referring to the tried and true Dolby Digital and DTS (Lossy) codecs....

12-14-2007, 11:29 PM	#7
un4gvn94538 Blu-ray Knight Top contributor Member since:Dec 2007 Location:Limbo (Bakersfield, Ca.) 4K collection:143 Blu-ray collection:811 DVD collection:54 Digital collection:1494 Trading Score:277	that may be, but what i got out of the email from dolby labs is that is the same quality no matter how its sent. so why would it change for dd?

12-15-2007, 01:07 AM	#8
Bruiser2007 Member Member since:Nov 2007	Good question.......All I can say is what I am hearing......Sometimes (Not at all times) letting the receiver decode the PS3 bitstream for DD or DTS does sound fuller at times than passing this over LPCM...Weird indeed....

12-15-2007, 01:24 AM	#9
un4gvn94538 Blu-ray Knight Top contributor Member since:Dec 2007 Location:Limbo (Bakersfield, Ca.) 4K collection:143 Blu-ray collection:811 DVD collection:54 Digital collection:1494 Trading Score:277	maybe....all i noticed is that it maybe a little louder.

12-15-2007, 08:50 PM	#10
gearyt Power Member Member since:Aug 2007 Location:Henderson, NV Home Theater Gallery:8 Blu-ray collection:33	Maybe it is changing from multi to THX mode and removing the bass/treble ?

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