News Cyberlink, Realtek, Gigabyte fix HD audio problems

http://www.bit-tech.net/news/2008/06/12/cyberlink-realtek-gigabyte-fix-hd-audio-problem/1

Cyberlink and Realtek have now fixed the audio downsampling problem that means you'll finally get full HD quality sound from Blu-ray discs.

 

I bloody well hope the Realtek ALC885 is included, my HTPC is going to have an ASUS Mobo as opposed to Gigabyte, since I needed Digital Coax-out.

 

took them long enough!!!

snazzy,i dont even have to upgrade my gigabyte 690g board...
very good news this as i was worried i was going to have to fork out the auzentech prelude and the hdmi expansion board to get this working in the long run!

Think its now coming time to upgrade my aging pioneer amp to a snazzy truehd capable jobby

edit: bindi i take it this only for powerdvd 8 ultra then?
and how will this work if youre using a seperate graphics card?
im using a 2600xt at the mo, will the sound be able to be passed through that or will it only be able to come out of the motherboards hdmi out?

 

I think it will output on the optical/coaxial digital output of the motherboard. But like you we dont know untl Q3/4...

 

i thought that the reason other than DRM why the hd audio wasnt implemented before is that spdif didnt have the bandwidth to carry the bitrate required for five+ channels. And that the only way to do it would be via analogue or over hdmi

 

You can't have a digital HD signal over an analogue connection, mate.

I'm pretty sure S/PDIF would be able to carry the signal, otherwise it's stupid because not everyone has HDMI... and a HD A/V Receiver with S/PDIF and no HDMI would then be useless.

 

just because it isnt digital doesnt mean it isnt hi-def, analogue is obviously capable of transmitting uncompressed signals... and given that an amp without hdmi inputs can have hd sound transmitted to its pre-outs.

tis all pretty well explained here...
http://www.dolby.com/consumer/technology/trueHD/AVRs/trueHD_avrs_2.html

 

I think you've misunderstood something... somewhere.

Dolby TrueHD IS digital. It is not analogue, and therefore it cannot be sent over an analogue connection. The only way (other than HDMI) that this signal can therefore be sent is over S/PDIF...

 

as long as you have a good DAC then the difference between a digital and analogue connection is minimal. As i said previously you can transmit uncompressed audio for 5 channels over analogue whereas you cannot over spdif due to bandwidth contraints. If you read the link in the post above if you try to transmit TrueHD over spdif it has to be down mixed to dolby digital.

 

First off at now point did he say you could have a "digital HD signal" over analogue, he only said "HD signal" and as fathazza points out analogue is perfectly capable of carrying HD audio.

S/PDIF does not have the bandwidth to carry multi channel high def audio. The options are 1) analogue connection to either pc speakers or to a receivers pre-outs 2) converted to LPCM and then transmitted over hdmi 3) send the raw bitstream over hdmi 1.3 e.g. dolby truehd.

It will be interesting to see when amd and nvidia release gpus that will fully support hd audio transfer over hdmi.

AFAIK that gpu does not support multi channel hd audio regardless of whether drm is present or not so I doubt you'll be able to use it for that purpose. For hdmi supplied by an igp e.g. 690G it will depend on whether the igp supports the necessary secure audio path between the player software and the drivers. As for hdmi supplied by any onboard audio codec (or discrete sound card) the issue they will have to deal with is that in order for hdmi to carry audio it must also have a video signal present so the audio codec/card will have to either have the video signal routed to it by the gpu or create a dummy video signal to allow the audio to passed through and then have the gpu send the real video signal. Hope that answers your question if not just ask.

Renoir

 

I stand firmly corrected, with my masculine pride hanging despairingly from the sharp, fierce hands of personal research.

I shall retreat.

 

thanks for the info renoir,

my motherboard does have the Realtek ALC889a chipset mentioned in the original news post. but it doesnt have any onboard video processing for bluray/hdvd, which is what i bought the 2600xt for... So i guess right now i have a graphics card that does video and a mobo that might be able to do the audio if cyberlink release this patch. I understand the point about dummy signals but it seems a little complicated and surely there might be some syncing problems to go with it.

I think my best bet might be to sell on the 690g board and 2600xt and get myself a 780g board instead which has onboard Hd video acceleration, and the added benefit of requiring lower power than my current combo. Tho i guess its a bit of a moot point until this patch is released and proved to be working. Still i guess the time it takes for that to happen will give me time to save up for a nice onkyo 606 receiver

 

No, 7 Ultra too. My contact at Cyberlink is taking some time off so I'll get more details when I can.

You'll need to set the soundcard to the Realtek not the UVD one because ATI only supports S/PDIF pass through still.

Never go up against Renoir, he'll chew you up and spit you out when we're talking about HTPCs /looks at past bite marks

 

sorry timmy I had just posted a rebuttal to your earlier post but did so after I saw your retraction and so have edited this post.

 

I just realised how embarrassingly bad my choice of metaphor was.

My pride drops ever lower.

I at least have the comforting excuse of my relative newcomer status in the enthusiast arena.

 

ah cheers for that peice of welcome news bindi...

how very un-cyberlink-like of them, they usually quite like to force people to pay for features they should have included in previous versions and even for downgrades... (like powerdvd 8 removing full hd-dvd support!)

any further news on how this is all going to work would be most welcome

 

Actually they've been offering free upgrades for stuff for quite a while when you purchase the Deluxe and Ultra versions - stuff like BD Live and BD 1.1 updates were free. It's only the OEM stuff that requires upgrading copiously, usually.

PDVD 8 was introduced after HD DVD died, it's hardly surprising tbh. :/

 

yeah i get what you are saying about updates which they actually do quite a lot of.
I just meant that functionally powerdvd didnt really change that much from version 3 to 6... im sure there were changes but in practice i doubt youd really notice them...

while hd-dvd may have died why remove it as a feature? they could have just let it be...

 

I completely agree - imo they have been tacking on features that no one really needs in an effort to add value and justify a repurchase, however, not everyone has GPU acceleration or advanced sound.

I agree with the removal of HD DVD, but if you include it you have to support it - I suppose it was just easier to concentrate on getting one standard right.

 

Wait.. PowerDVD Ultra 8.0 DOESN'T support HD DVD? Oh man... I was gonna buy a combo drive for my HTPC and get some cheap HD DVDs from gamestation.

I'm gonna have to see if I can get 7.0 instead.. Maybe the drive will come with 7.0 anyway.