ATI Radeon HD 4600 & 4800 series support 7.1 channel HDMI audio! - Page 4 - AVS Forum
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post #91 of 2819 Old 05-26-2008, 09:14 PM
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Quote:
Originally Posted by ToTTenTranz View Post

Another confirmation of the 4800's HDMI 7.1 channel support:


http://www.tomshardware.tw/549,news-549.html


In one of the slides there's the following statement:

- Built-in HDMI with 7.1 surround sound support

The newly released pictures of the cards show two DVI ports and an S-video. Do they use some kind of DVI to HDMI adapter? I got confused because I didn't think that the DVI connector had space or the capability for audio.
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post #92 of 2819 Old 05-26-2008, 09:17 PM
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Quote:
Originally Posted by mcnabney View Post

The newly released pictures of the cards show two DVI ports and an S-video. Do they use some kind of DVI to HDMI adapter? I got confused because I didn't think that the DVI connector had space or the capability for audio.

Like all the HD 2x00 and 3x00 series before it, there is special DVI port on the card that is also HDMI compliant and carries audio over unused pins of the DVI port when combined with ATI's proprietary HDMI adaptor (typically included in the box).

And that's not S-video, that's a 9-pin port that can be either s-video, or component video, just to be clear.
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post #93 of 2819 Old 05-26-2008, 09:22 PM
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There are no extra pins for the audio... maybe a shorted pair to indicate presence, but the audio is multiplexed into the video signal...

Jim

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post #94 of 2819 Old 05-26-2008, 09:23 PM
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Quote:
Originally Posted by jimwhite View Post

There are no extra pins for the audio... maybe a shorted pair to indicate presence, but the audio is multiplexed into the video signal...

Jim

true story, I wasn't thinking clearly, the extra pins simply detect the presense of the ATI HDMI adapter, since it's been proven generic adapters don't provide an HDMI audio signal when attatched to the DVI port.
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post #95 of 2819 Old 05-26-2008, 09:30 PM
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Quote:
Originally Posted by jimwhite View Post

There are no extra pins for the audio... maybe a shorted pair to indicate presence, but the audio is multiplexed into the video signal...

Jim

When I saw the picture form Taiwan Tom's Hardware this afternoon, I have the similar question myself... Today, all 2XXX and 3XXX with gray ATI dongle, we can have 2 channel SPDIF output audio. If that is the picture for the 4XXX in tom's hardware, so HDMI 7.1 support means we need to use similar dongle too. So we might not getting a true bitstreaming 7.1, right? Or this kind of dongle can do bitstreaming 7.1?
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post #96 of 2819 Old 05-26-2008, 09:36 PM
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that's a big disappointment
no upgrade from my 2600XT until they have pure HDMI 1.3 output via a dedicated HDMI chipset fully 1.3a compliant
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post #97 of 2819 Old 05-26-2008, 09:43 PM
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Quote:
Originally Posted by hlkc View Post

When I saw the picture form Taiwan Tom's Hardware this afternoon, I have the similar question myself... Today, all 2XXX and 3XXX with gray ATI dongle, we can have 2 channel SPDIF output audio. If that is the picture for the 4XXX in tom's hardware, so HDMI 7.1 support means we need to use similar dongle too. So we might not getting a true bitstreaming 7.1, right? Or this kind of dongle can do bitstreaming 7.1?

Well again, it's really about what's going on inside the GPU, yes the older models only had a basic connection for their integrated audio codec, the slides for the 4x00 series imply ATI woke up and did a proper 8-channel implimentation. The dongle itself isn't the limitation.

No it might not do bitstreaming, but nothing from the PC can so far, what it can do is sent multi-channel PCM, which is basically the same, you simply have the player software doing the decoding before sending it over HDMI.
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post #98 of 2819 Old 05-26-2008, 10:12 PM
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Quote:
Originally Posted by SpHeRe31459 View Post

Well again, it's really about what's going on inside the GPU, yes the older models only had a basic connection for their integrated audio codec, the slides for the 4x00 series imply ATI woke up and did a proper 8-channel implimentation. The dongle itself isn't the limitation.

No it might not do bitstreaming, but nothing from the PC can so far, what it can do is sent multi-channel PCM, which is basically the same, you simply have the player software doing the decoding before sending it over HDMI.

I am not 100% sure what you mean.

So let's assume this 4XXX is not bitstream but what you are saying is, it might do 7.1 LPCM and with PDVD with just regular LPCM receiver the out come will be about same as bitstream 7.1 to lossless receiver, is that what you refer to?
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post #99 of 2819 Old 05-26-2008, 10:43 PM
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Quote:
Originally Posted by hlkc View Post

I am not 100% sure what you mean.

So let's assume this 4XXX is not bitstream but what you are saying is, it might do 7.1 LPCM and with PDVD with just regular LPCM receiver the out come will be about same as bitstream 7.1 to lossless receiver, is that what you refer to?

yes.
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post #100 of 2819 Old 05-26-2008, 10:55 PM
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Originally Posted by SpHeRe31459 View Post

yes.

Thank you. I was under the impression that this 4XXX is at least can do that, 7.1 LPCM. So with luck we can have bitstream 7.1.

Btw, I have about 50+ BD title. I noticed if they offer loseless, they are 5.1 loseless TureHD. So how do they go but doing 7.1 LPCM or 7.1 bitstream to 5.1 loseless?
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post #101 of 2819 Old 05-27-2008, 12:27 PM
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Quote:
Originally Posted by hlkc View Post

Thank you. I was under the impression that this 4XXX is at least can do that, 7.1 LPCM. So with luck we can have bitstream 7.1.

Btw, I have about 50+ BD title. I noticed if they offer loseless, they are 5.1 loseless TureHD. So how do they go but doing 7.1 LPCM or 7.1 bitstream to 5.1 loseless?

The 7.1 in the specifications of the Radeon, just mean it can transport up to 7.1 channels. It can send 5.1 as well. It will send through whatever number of channels it gets from a player application.
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post #102 of 2819 Old 05-27-2008, 12:41 PM
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I'm kinda confused about one thing....lets say that I get a 780G mobo (Gigabyte GA-MA78GM-S2H) right now and in future, if i decide to do HD audio, I can just upgrade the video card to HD4800 ?? Or will I need to change sound card / mobo too ?

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post #103 of 2819 Old 05-27-2008, 01:27 PM
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Originally Posted by ajamils View Post

I'm kinda confused about one thing....lets say that I get a 780G mobo (Gigabyte GA-MA78GM-S2H) right now and in future, if i decide to do HD audio, I can just upgrade the video card to HD4800 ?? Or will I need to change sound card / mobo too ?

No you just drop in the Radeon and have it take over, it should disable the onboard video.
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post #104 of 2819 Old 05-27-2008, 01:35 PM
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Originally Posted by SpHeRe31459 View Post

No you just drop in the Radeon and have it take over, it should disable the onboard video.

i understand the video part........ my question was about the audio.

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post #105 of 2819 Old 05-27-2008, 01:58 PM
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Quote:
Originally Posted by SpHeRe31459 View Post

The 7.1 in the specifications of the Radeon, just mean it can transport up to 7.1 channels. It can send 5.1 as well. It will send through whatever number of channels it gets from a player application.

Hi SpHeRe31459,

Question about LPCM - let's assume we can only do 7.1 LPCM in 4XXX, how do we send it from HTPC/PDVD8 to receiver? Analogue 8 mini-RCA or SPDIF? Can we do HDMI 1.3b via LPCM?
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post #106 of 2819 Old 05-27-2008, 02:00 PM
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Quote:
Originally Posted by ajamils View Post

i understand the video part........ my question was about the audio.

The audio will output from the DVI 4XXX port via using ATI dongle, same as current 2XXX and 3XXX series.
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post #107 of 2819 Old 05-27-2008, 03:31 PM
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Quote:
Originally Posted by hlkc View Post

Hi SpHeRe31459,

Question about LPCM - let's assume we can only do 7.1 LPCM in 4XXX, how do we send it from HTPC/PDVD8 to receiver? Analogue 8 mini-RCA or SPDIF? Can we do HDMI 1.3b via LPCM?

Huh? You use HDMI. HDMI carries 7.1 LPCM, it's been in the specs since HDMI 1.0. Remember, LPCM = raw/uncompressed digital audio.

Analog is analog, in other words it is LPCM converted to analog via a sound card's DACs. And S/PDIF doesn't have the bandwidth to support 7.1 LPCM.
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post #108 of 2819 Old 05-27-2008, 03:33 PM
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Quote:
Originally Posted by ajamils View Post

i understand the video part........ my question was about the audio.

As hlkc said the add-in card does the audio too. You might be missing a piece of information: all Radoen HD 2x00, 3x00, 4x00 and related chipsets (780G) have an integrated sound device right in the GPU. So what you're disabling is the GPU on board (780G) so the HDMI sound should disabled with it and the new 4x00 card's HDMI audio support takes over.
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post #109 of 2819 Old 05-27-2008, 04:22 PM
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Originally Posted by SpHeRe31459 View Post

Huh? You use HDMI. HDMI carries 7.1 LPCM, it's been in the specs since HDMI 1.0. Remember, LPCM = raw/uncompressed digital audio.

Analog is analog, in other words it is LPCM converted to analog via a sound card's DACs. And S/PDIF doesn't have the bandwidth to support 7.1 LPCM.

I have both HDMI 1.3b from my HTPC 3650 GC now and SPDIF from MB if need. I am not sure how to output 7.1 LPCM. Do you mean if 4XXX can output 7.1 LPCM then I can simply use HDMI output 7.1 LPCM from 4XXX via ATI grey dongle to receiver, exactly like what I have today with my 3650, right?
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post #110 of 2819 Old 05-27-2008, 04:58 PM
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Quote:
Originally Posted by hlkc View Post

I have both HDMI 1.3b from my HTPC 3650 GC now and SPDIF from MB if need. I am not sure how to output 7.1 LPCM. Do you mean if 4XXX can output 7.1 LPCM then I can simply use HDMI output 7.1 LPCM from 4XXX via ATI grey dongle to receiver, exactly like what I have today with my 3650, right?

ding ding ding.

yeah that's the point integrated 7.1 HDMI audio from the GPU HDMI output.

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post #111 of 2819 Old 05-27-2008, 05:06 PM
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Guess it would have Protected Video/Audio Path PAVP enabled in it's driver /Qimonda GDDR5. I guess it would enable the one connection "HDMI" cable to your receiver. The XP and Vista note needs deciphering as I don't think XP can do PAVP. But I'm saving my money now cause this could be a non mother board solution.

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post #112 of 2819 Old 05-27-2008, 06:01 PM
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Quote:
Originally Posted by sotti View Post

ding ding ding.

yeah that's the point integrated 7.1 HDMI audio from the GPU HDMI output.

thank you scotti,

let's hope the best - 4XXX will able to do bitstreaming but at least we know that it will do 7.1 LPCM. I already change my set up and using all HDMI 1.3b cables from my SAT to HTPC instead of DVI and SPDIF before. Either way I will get 4XXX as soon as release and do LPCM at the minimum. Btw, I am playing BD using PDVD8 and use AC3/DTS pass thru today and it sounds better than my SPDIF set up before. Can't wait the LPCM or bitstream lossless audio!
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post #113 of 2819 Old 05-31-2008, 06:20 PM
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I hope they come out with a lower end model soon. I don't need the gaming power. Just the 7.1 HDMI and something smaller that uses less power.

HTPC: Intel e6300 2.8ghz, Intel DG45ID, 2gb DDR2, Radeon 5570, MCE IR receiver, Yamaha RX-V663 receiver via HDMI, panasonic ax100u, 145" S-I-L-V-E-R painted screen, 2x Roku 3's, chromecast, Amazon Fire TV, Vizio M602i-B3
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post #114 of 2819 Old 06-01-2008, 11:14 AM
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post #115 of 2819 Old 06-01-2008, 11:52 AM
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Quote:
Originally Posted by MikeSM View Post

More confirmation: http://www.fudzilla.com/index.php?op...=7626&Itemid=1


But it did not say anything it rill be PCM or bitstream...
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post #116 of 2819 Old 06-01-2008, 02:14 PM
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Quote:
Originally Posted by hlkc View Post

But it did not say anything it rill be PCM or bitstream...

True. But we'll know very soon. The 4850 should be available for purchase in 2 weeks...
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post #117 of 2819 Old 06-01-2008, 02:15 PM
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I am yet to see any confirmation whatsoever that these new cards can bitstream or even pass 8ch LPCM.
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post #118 of 2819 Old 06-01-2008, 02:32 PM
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Quote:
Originally Posted by benbell View Post

I am yet to see any confirmation whatsoever that these new cards can bitstream or even pass 8ch LPCM.

Shouldn't be one way or the other if they official indicated that it will able to do 8 channels audio?
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post #119 of 2819 Old 06-01-2008, 02:37 PM
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Quote:
Originally Posted by MikeSM View Post

True. But we'll know very soon. The 4850 should be available for purchase in 2 weeks...

I am not sure mid-June launch date any more... why? if a product is going to release in retail market in 2 weeks, we should know all the details by now. But we couldn't even know what these card can or can't do today. As a potential end user, of course I wish I will see this card in my hand 2 weeks and let's hope it is the case and more importantly bit stream 8 channels is what I really hope so now
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post #120 of 2819 Old 06-01-2008, 03:07 PM
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I'd buy it and replace my nvidia 880gtx if it can atleast do LPCM on 6/8 channels. If it can bitstream that'd be just great.

The other (non-mobo) option is one of the HDMI audio cards by asus/auzentech whenever they come out finally.
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