[inca]

Hopefully this will be my last question over the audio. On my Onkyo receiver, which has no HDMI, I can obviously only use optical. So in this case, does it make any sense to use DD TrueHD instead of DD+ since they both are mixed to a DTS signal on my receiver?? On Batman Begins I have an option for both. Does one mix better then the other, I know it sounds sill buy I don't know? I remember reading one guy stating that the TrueHD was more quiet, but I just want to know?

 

[Frank Stein]



Quote:
Originally Posted by inca /forum/post/0


Hopefully this will be my last question over the audio. On my Onkyo receiver, which has no HDMI, I can obviously only use optical. So in this case, does it make any sense to use DD TrueHD instead of DD+ since they both are mixed to a DTS signal on my receiver?? On Batman Begins I have an option for both. Does one mix better then the other, I know it sounds sill buy I don't know? I remember reading one guy stating that the TrueHD was more quiet, but I just want to know?

When you did your own comparison, which sounded better to you?

 

[inca]



Quote:
Originally Posted by Frank Stein /forum/post/0


When you did your own comparison, which sounded better to you?

Personally, I can't tell a difference, but I just want to make sure that I am getting the most out of my system so thats why I'm asking. I want to technically make sure that I am getting the most, even if its just a little more.

 

[eightninesuited]

You CANNOT hear lossless through optical. Only through HDMI or analog. Through optical you'll hear the lossy core.

 

[1loudsuv]

ive always wondered...


why cant they make it so we could hear lossless through optical?

 

[inca]



Quote:
Originally Posted by eightninesuited /forum/post/0


You CANNOT hear lossless through optical. Only through HDMI or analog. Through optical you'll hear the lossy core.

I understand that I can't get lossless. I'm just curious as to if the A2 downmixes the DDTrueHD better then the DD+ when it downmixes it to DTS for my Receiver to play?

 

[muzz]



Quote:
Originally Posted by 1loudsuv /forum/post/0


ive always wondered...


why cant they make it so we could hear lossless through optical?

1 word:


Bandwidth

 

[bobgpsr]



Quote:
Originally Posted by muzz /forum/post/0


1 word:


Bandwidth

Not really. More of a political decision since S/PDIF has not any form of copy protection -- so codecs that could do lossless multichannel were not developed for it. While 1394 Firewire (iLink) has 5C and HDMI has HDCP to provide copy protection.


The clock on S/PDIF rides with the data -- no real technical reason why -- esp for coax -- that it could not have gone up to the needed rates for lossless 5.1 codecs.

 

[pee]



Quote:
Originally Posted by inca /forum/post/0


Hopefully this will be my last question over the audio. On my Onkyo receiver, which has no HDMI, I can obviously only use optical. So in this case, does it make any sense to use DD TrueHD instead of DD+ since they both are mixed to a DTS signal on my receiver?? On Batman Begins I have an option for both. Does one mix better then the other, I know it sounds sill buy I don't know? I remember reading one guy stating that the TrueHD was more quiet, but I just want to know?

Excellent question "inca"! I honestly had the same question today while watching Batman Begins. But being new to the forum, I was hesitant to ask.


But as you, I can't really tell the difference between the two.


My receiver is the Onkyo TX-SR602.

 

[joffer]



Quote:
Originally Posted by muzz /forum/post/0


1 word:


Bandwidth

wrong word

 

[DeathKnight]

No kidding. Fiber can carry a massive amount of bandwidth (as well as coax).

 

[jayselle]



Quote:
Originally Posted by DeathKnight /forum/post/0


No kidding. Fiber can carry a massive amount of bandwidth (as well as coax).

The protocol wasn't designed to carry more than 2 channel PCM. In the networking world SFC (single fibre core) can handle 1Gb/s speeds. And for the fact checkers yes it's capable of faster speeds especially running full duplex.

 

[Axatax]



Quote:
1 word:


Bandwidth

I don't think it's that simple. ADAT uses the same physical connection and cable and has enormous bandwidth. The issue is hard/artificial limits with the S/PDIF protocol.

 

[DeathKnight]



Quote:
Originally Posted by jayselle /forum/post/0


The protocol wasn't designed to carry more than 2 channel PCM.

I wasn't arguing artificial limits set by protocol. I was arguing the limits of the medium itself (which far exceeds the bandwidth needed for uncompressed multi-channel audio).

 

[inca]

Soo...... Does DD+ or DTSTrueHD Down mix better then one or the other, thats what the original question is about, not why optical can't handle PCM 5.1.

 

[abr27440]

To answer the OP, yes the TrueHD track will in theory sound better downmixed. I have yet to hear a difference though.

To everyone else, can we please kill the myth that fiber/coax does not have enough bandwidth, it is truly a artificial limitation.

 

[sb1]

It's been my experience that low frequencies tend to be the easiest to tell if you can hear a difference. Similar to DD vs. DTS, the only time I can tell a difference is listening to what the sub has to say. Even then, there might be a little placebo in my drink. But, I do think you should listen to the bass. It might just tell you which you really do prefer.

 

[FilmMixer]

You should hear the differnce in the imaging starting with a better source before re encode... but alot of it depends on your system.


If you have a disc with THD, use it...


To sb1... Dolby and DTS use differnt crossover settings and level controls in their encoders for the LFE...

 

[inca]

Great, thanks for the answers guys