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Do We Really Need AMD TrueAudio?

AsRock

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#51
A major point most seam to have missed is that prior attempts have simulated positional audio now they get the exact position data pre simulation plus its sodiin free fer fecks sake and again all consoles have gone the same way
Well it works for me with my 6970 and allows me to know were fire is coming from or foot steeps and such so yes i need it for better game play and ATI give that option though their video cards..

One thing is though their cards already have it so why are they only bringing it up now like if it was not there in the 1st place lol.

And Free LOL, nothings FREE. It's one reason i will opt for a ATI before a nVidia card. I have used positional audio in my games for so many years now just that many don't realize they can have it or not in to such things. And optical output used to be a given for positional audio even back when i had my ABit mobo with a 3800x2.

And to be honest i don't care about consoles and if they have it or not no good to me as seen as most only have 2-4 games that i will play on them in there life time.
 
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#52
I hear my beatles collection in mono
As for gaming... everything that's an evolution of surround is fine. I believe that in my case, I would make better use of it when watching a movie, but for now there are no movies released for this technology. I believe it's ok to have it, but I was like "I wasn't expecting this to be as important as framerate and quality improvement on the GPU"
 
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#53
What I interpreted from the presentation was that all of these effects are possible without TrueSound, but they just take more CPU load. However, they killed the argument that GPU based audio rendering is needed when they said that advanced sound effects use up to 15% of the CPU. CPUs are powerful enough where dedicated DSPs aren't needed anymore, and most have idle cores when running poorly threaded games anyway.

I don't agree with their argument of the need to offload audio processing from the CPU. GPUs are rarely less than 100% utilized in games, while it's much more difficult to thread a game properly to reach 100% CPU utilization. Why not use those spare CPU cycles to process audio and let the GPU run at 100% load processing graphics?

That is exactly what I was thinking the whole time I read the article. No game has EVER used up 100% of the multi-core CPUs I have owned, AMD or Intel. Offloading the cycles from the CPU to the GPU makes absolutely no sense, considering the purpose of a GFX is to offload the CPU workload to the GPU. So why is it AMD thinks it needs to tax the GPU even more when clearly the CPU needs no help? :banghead:
 
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#54

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#55
Am I the only person that plays competitative Counter Strike? Positional Audio is one of the most important aspects of that game... without some kind of virtual surround, camping bombsites would be 10 times harder.
 

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#56
I've used onboard sound, and a separate soundcard, the best sound quality I have heard on my PC is through my lindy usb DAC with phones plugged in it. I only use stereo as It bugs me all the wire for 5.1.

I would probs never use the sound output on these cards anyway tbh. And it its probably only marketing anyway.
 
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#57
Why is the author so bothered by this topic? If it lowers CPU load, it might help AMD. They're still a CPU manufacturer, too. And: For the moment their CPU-Performance is bad. That bad, that people advice to buy a Intel-CPU if you want to play BF3 in Multi-Player mode. Therefore it might help AMD to get a foot on the ground for some games. The second thing might be, that they are using a similar technology for the XBO or PS4 and just try to use it to their advance, like they do with Mantle.
If things are not worth the effort, this solution will vanish - so what? On the other hand it might help an AMD-AMD system to raise frames, cause today you can get much more frames with an Intel-CPU than with an AMD-CPU, given the same AMD video card. Therefore the video card of an AMD-AMD system has some resources left for some additional computing, lighten the stress on the CPU and gain overall performance.

Actually I also doubt, that this is an exclusive feature. Meaning, nVidia can join in easily by also using this DSP-Chip - if they want to.
 
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#58
Am I the only person that plays competitative Counter Strike? Positional Audio is one of the most important aspects of that game... without some kind of virtual surround, camping bombsites would be 10 times harder.
I've had my Corsair 1500 headphones for about 2 years now.

They connect with USB and have a controller on the cable that is basically a sound card. With the software it simulates 7.1 sound. And despite what reviews have said about these products, it works pretty well for me.

I can hear behind me to left, below me to right, etc. Seems I'm often headed towards the enemy before others are in multiplayer games.

So this capability has been out there for a while. Not a ground shaking revelation to me.

Even if it is somewhat better, I'd still rather hear about the graphics capability of a graphics card.


...
 
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#59
That is exactly what I was thinking the whole time I read the article. No game has EVER used up 100% of the multi-core CPUs I have owned, AMD or Intel. Offloading the cycles from the CPU to the GPU makes absolutely no sense, considering the purpose of a GFX is to offload the CPU workload to the GPU. So why is it AMD thinks it needs to tax the GPU even more when clearly the CPU needs no help? :banghead:
Well for one it'll help AMD's APUs perform batter because they'll have more CPU cycles available to do things other than software sound emulation. In addition, there's only so much you can do in software for audio. A dedicated, fixed-function chip to do all that is not only more efficient, but also far more powerful in terms of what you can do with it.

For anyone wondering, one of the people partnering up with AMD is AudioKinetic, the guys who designed the Wwise SDK. Wwise is already found in about 300 games and is compatible with the Unreal 3 and 4 engines, supporting TrueAudio is a plugin away.
 
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#60
I believe the way it works is that he applicatiuon (game) sends out what sound it wants, this is processed by the TrueAudio (however it does that) and the resultant sound is then directed to whatever output has been selected, be that HDMI, on-board analogue/digital or a sound card.
Can anyone verify whether this is true? It's the one thing I want to know the most because I've never actually gotten HDMI multi channel audio to work from my GPU's HDMI port.

If it IS true, it's going to be very limited and probably why through part of the GPU14 demo the GenAudio guy talked about headphones, "BRTF", and virtual surround on a stereo signal.

As is I use optical out from my MB, which my AVR can only use as Dolby Pro Logic II at best. I'm guessing to get the "benefits" of TrueAudio I'd have to put my Yam AVR in "straight" mode which is only 2.1 PCM.

In other words, it's sounding to me like you'll lose your center and surround channels with TrueAudio unless you can get multi channel HDMI audio working, which has been hit and miss at best throughout the industry, esp for gaming.

So in short, it looks like for those in my position, TrueAudio is only really beneficial when gaming on headphones.
 

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#61
Can anyone verify whether this is true? It's the one thing I want to know the most because I've never actually gotten HDMI multi channel audio to work from my GPU's HDMI port.

If it IS true, it's going to be very limited and probably why through part of the GPU14 demo the GenAudio guy talked about headphones, "BRTF", and virtual surround on a stereo signal.

As is I use optical out from my MB, which my AVR can only use as Dolby Pro Logic II at best. I'm guessing to get the "benefits" of TrueAudio I'd have to put my Yam AVR in "straight" mode which is only 2.1 PCM.

In other words, it's sounding to me like you'll lose your center and surround channels with TrueAudio unless you can get multi channel HDMI audio working, which has been hit and miss at best throughout the industry, esp for gaming.

So in short, it looks like for those in my position, TrueAudio is only really beneficial when gaming on headphones.
You told windows to use 5.1 though configure ?.
 
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#62
You told windows to use 5.1 though configure ?.
It doesn't even give me that option. I can get my TV and AVR detected as HDMI Audio devices, but they only show stereo as a config option.

It's not like HDMI audio on GPUs not working is anything new, I've seen plenty of people say the same. One here that DID try using it for games even said he prefers his sound card's DTS, because the multi channel PCM messed up the channel positioning in games.
 
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#63
Can anyone verify whether this is true? It's the one thing I want to know the most because I've never actually gotten HDMI multi channel audio to work from my GPU's HDMI port.

If it IS true, it's going to be very limited and probably why through part of the GPU14 demo the GenAudio guy talked about headphones, "BRTF", and virtual surround on a stereo signal.

As is I use optical out from my MB, which my AVR can only use as Dolby Pro Logic II at best. I'm guessing to get the "benefits" of TrueAudio I'd have to put my Yam AVR in "straight" mode which is only 2.1 PCM.

In other words, it's sounding to me like you'll lose your center and surround channels with TrueAudio unless you can get multi channel HDMI audio working, which has been hit and miss at best throughout the industry, esp for gaming.

So in short, it looks like for those in my position, TrueAudio is only really beneficial when gaming on headphones.
The first GenAudio demo at GPU 14 was in 7.1 multi channel and they specifically said it supports mappings of input to output channels. I think it's likely "most impressive" when using headphones/2 channel output as you are getting very close to multi-channel output with that.

I would hope that (like some of the other 3D sound standards) the more output channels you have the better it works for more seating positions and can provide even more accurate positioning. It would be nice if some of the attendees at the conference could comment on how the 7.1 demo sounded.

As a side note, I also note that some folks seem to be confused (if that's the right word) between sounds source numbers and output channels. i.e. the 8 or 16 channels in HDMI, this is just the number of supported speakers, you can still have an infinite (if the system supports it) number of sounds being sent via those 8 (or more) speakers. The way GenAudio works, we should actually need less speakers "in room".

The number of speakers should really be dictated by available room space.

What I would be interested in finding out is if GenAudio's methods are capable of sending there "special filters encoded in the output steam" in such a way that e.g. height effects could work with things like PLIIz and Yamaha presence to also utilise actual height speakers to further position sounds. If not, there is no point in getting any output system with more channels than those discretely encoded and for most rooms we can probably stop at 7.x (.4 ideally) ... which would actually be a good thing from a cost perspective. :)

Maybe these are some of the things they are thinking about for GenAudio 2.0. :)
 
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#64
The first GenAudio demo at GPU 14 was in 7.1 multi channel and they specifically said it supports mappings of input to output channels. I think it's likely "most impressive" when using headphones/2 channel output as you are getting very close to multi-channel output with that.

I would hope that (like some of the other 3D sound standards) the more output channels you have the better it works for more seating positions and can provide even more accurate positioning. It would be nice if some of the attendees at the conference could comment on how the 7.1 demo sounded.

As a side note, I also note that some folks seem to be confused (if that's the right word) between sounds source numbers and output channels. i.e. the 8 or 16 channels in HDMI, this is just the number of supported speakers, you can still have an infinite (if the system supports it) number of sounds being sent via those 8 (or more) speakers. The way GenAudio works, we should actually need less speakers "in room".

The number of speakers should really be dictated by available room space.

What I would be interested in finding out is if GenAudio's methods are capable of sending there "special filters encoded in the output steam" in such a way that e.g. height effects could work with things like PLIIz and Yamaha presence to also utilise actual height speakers to further position sounds. If not, there is no point in getting any output system with more channels than those discretely encoded and for most rooms we can probably stop at 7.x (.4 ideally) ... which would actually be a good thing from a cost perspective. :)

Maybe these are some of the things they are thinking about for GenAudio 2.0. :)
You hit on all the points I thought about when I heard the conference, and I couldn't agree more with your opinions. Virtual surround shouldn't be a replacement for discrete channels, even though it was pitched in that manner at the demo (where they only enabled two channels and encouraged the audience to compare it to the 7.1 channel demo). I can see their argument for appealing to the masses who, according to one of the speakers at the conference, "can't even get their 5.1 systems set up right." I don't use headphones, and from my experiences with speakers and games it's just not possible to ever create a virtual surround mix that will sound as good as having discrete speaker channels.

Rooms have unique acoustic signatures and virtual surround mixes never account for the acoustic signature of the room in which they are being played. So while my audio receiver can analyze the room characteristics and adjust frequency response of the speakers to cancel out the room's properties, you can't do that precisely with virtual surround because it assumes you have a specific room shape and frequency response. The only good use I see for virtual surround is in headphones because they do not have to deal with echoes and reverberations of the room. I always see adding more speakers to a room as the better option than going with virtual surround, but I can understand that most rooms don't have the space for a lot of speaker channels so virtual surround can be better than nothing.

On a side note I know I'm in an extreme minority but I do have a 9.1 channel home theater. For those who are not familiar, as of right now there is no native way to use the height channels; the only way to use them is through matrixed 7.1 mixes like Dolby PLIIz and reprocessing of other formats. I have tested the system using 7.1 audio sources with and without the height channels enabled (with audio being split from the main stream using Dolby PLIIz, Audyssey DSX, and DTS Neo:X).

The height channel effect is very subtle in most cases, and I could completely understand if someone tried the comparison to virtual surround and couldn't tell any difference at all. The virtual surround demos do emulate the experience I have had with height channels very well, but I don't know if that's because these height effects are very subtle or if the current lack of discrete data for the height channels reduces their effectiveness. If there was a way to get discrete channel information to the height channels then they would sound a lot better.

I have played a lot of games using the 9.1 system, and the best one I've heard so far was Heavy Rain for the PS3. You almost felt like you needed an umbrella in some of the scenes in that game. Sports games are also good since you really get the effect of a crowd cheering in a stadium and you can hear people screaming from the cheap seats.

It doesn't even give me that option. I can get my TV and AVR detected as HDMI Audio devices, but they only show stereo as a config option.

It's not like HDMI audio on GPUs not working is anything new, I've seen plenty of people say the same. One here that DID try using it for games even said he prefers his sound card's DTS, because the multi channel PCM messed up the channel positioning in games.
If you only see stereo on the HDMI output, then that means that the only LPCM (uncompressed) audio stream your device supports is two channel. This does not mean it does not support compressed multi channel formats like Dolby Digital or DTS, just that it does not support uncompressed 5.1 or 7.1 audio. If you have a receiver that has 5.1 or 7.1 channels and only shows up as stereo, then you need to use Dolby Digital Live or DTS connect to compress the audio into a compressed multi-channel format before your receiver can decode it. I've never seen that software used over HDMI though, only with certain sound cards with the right licensing and TOSLINK or digital coax outputs.

Also, if the multi-channel LPCM is messed up in games, I highly doubt it's the video card's fault. Either the receiver has the speakers wired incorrectly or the game is outputting audio for a different number of speakers. Most games don't detect the correct number of speakers automatically and if you don't manually set it the game sounds awful.

From my experience in troubleshooting problems with computer HDMI audio output, almost always the cause is what I described two paragraphs above. The problem lies in the receiver or end device not supporting multi-channel LPCM rather than with the video card.
 
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#65
I only use stereo as It bugs me all the wire for 5.1.
Some good sound systems only have digital optical port, so for a 5.1 or even 7.1 you only need 1 cable. ;)
 
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#66
Personally i think it's just as pointless as PhysX, TressFX and bunch of other proprietary useless junk.

Anyone remembers for how long they've been bragging about HW accelerated physics? And PhysX is the furthest they could get anything. Lame to the extreme. And with this one, covering only half of the user base does exactly the same thing. It will be an interesting gimmick to talk about for a month and then no one will care about it. pointless waste of everyones resources.

Why no one for the love of god standardizes physics like they managed with graphics and call it i don't know, i'll just use my imagination, DirectPhysics!?. And then do the same for audio if they want a shader accelerated 3D audio positioning and i don't know, call it DirectSound3D again?. Creative Labs stabbed themselves when they made EAX 5.0 locked down exclusive, but it wasn't as bad as it is with single GPU maker side features. With soundcard you still had a choice to pick regardless if you were using NVIDIA or AMD. But if only AMD has this, there is no way NVIDIA will also support it. And vice versa. And who gets screwed in the end the most? Gamers, no one else.

I love 3D sound positioning and advanced audio features, but all this is just one big muscle showing off and nothing else. We will not get anything useful out of it in the long term. Which is a shame because due to lack of standardization, audio part of the games has been more and more neglected despite of what they were saying with all the software audio engines (like the FMOD) which if i'm honest all sound rubbish compared to any EAX 5.0 HD powered title on a proper Sound Blaster soundcard...
 
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#67
Agree 100%.
However, on a side note, the only game I know to fully support EAX 5.0 was FEAR 2 if I remember correctly, no other games were made for the last version of EAX. However even EAX 5 pales in comparison with Aureal's A3D 2.0, which not even today there are games to match the sound effects in games like Thief, Unreal, DeusEx, etc. And this is only because of basterds from M$ that killed 3D hardware sound.
 
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#68
Also, if the multi-channel LPCM is messed up in games, I highly doubt it's the video card's fault. Either the receiver has the speakers wired incorrectly or the game is outputting audio for a different number of speakers. Most games don't detect the correct number of speakers automatically and if you don't manually set it the game sounds awful.

From my experience in troubleshooting problems with computer HDMI audio output, almost always the cause is what I described two paragraphs above. The problem lies in the receiver or end device not supporting multi-channel LPCM rather than with the video card.

I've done this experiment before. Used to run HDMI-out on my 5850CFs.

In multi-channel PCM mode on my receiver, some games the center speaker wouldn't be accurate. Like in Tombraider Underworld and Max Payne 3, the speech doesn't come out of the center at all times, as it should. However you get other sound effects like gunshots and footsteps from the center with the occasional speech from Lara and Max being outputted from center during specific scenes. I put it down to the game, not the hardware. Other games worked fine.

I've had a few DDL and DTS interactive compatible soundcards and the center action has always been correct 100% in all games and situations.


Agree 100%.
However, on a side note, the only game I know to fully support EAX 5.0 was FEAR 2 if I remember correctly, no other games were made for the last version of EAX. However even EAX 5 pales in comparison with Aureal's A3D 2.0, which not even today there are games to match the sound effects in games like Thief, Unreal, DeusEx, etc. And this is only because of basterds from M$ that killed 3D hardware sound.
Invest in home cinema and you won't care what Creative and Microsoft do.
 
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#69
@The Von,
Yeah, my Yam AVR is only an entry level model that doesn't even have software calibration, so I wouldn't be surprised if it doesn't support multi channel uncompressed audio. Rather than Yamaha giving me the details on it or just saying they don't know though, they just laughed at me and insisted it was something wrong at my PC end. Bunch of douche bags.

I mean I know the average phone support guy may not know these things, but they should be able to find out from someone in their tech dept. How is a customer supposed to make an intelligent decision about how well an AVR supports gaming if he doesn't even know if it's capable of picking up uncompressed multi channel audio from the PC?

@nemesis,
Yeah I was thinking it might be most beneficial with headphones too, but did you notice that the stereo part of the GenAudio demonstration didn't draw nearly the response (none really) that the multi channel part did? I also purposely put my AVR in 2.1 PCM for that part, and it wasn't anything special.

So far they've not given me any reason to want to go out and buy some decent cans like I used to have. There's no telling how much developer support it will have either.
 
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#70
@The Von,
Yeah, my Yam AVR is only an entry level model that doesn't even have software calibration, so I wouldn't be surprised if it doesn't support multi channel uncompressed audio.

The Yamaha RX-V371 AVR supported uncompressed audio. Supports Dolby Digital True HD and DTS-HD Master which are uncompressed format. For it to be a HD receiver it has to support multi channel PCM as standard as this is a back-up method on blu-ray titles if Dolby True HD or DTS-HD Masters fails.


•HDMI 1.4a (3D)
•Linear PCM
•Lip sync audio delay
•Multichannel Linear PCM
http://www.simply-surround-sound.com/yamaha-rx-v371-receiver.html




@nemesis,
Yeah I was thinking it might be most beneficial with headphones too, but did you notice that the stereo part of the GenAudio demonstration didn't draw nearly the response (none really) that the multi channel part did? I also purposely put my AVR in 2.1 PCM for that part, and it wasn't anything special.

So far they've not given me any reason to want to go out and buy some decent cans like I used to have. There's no telling how much developer support it will have either.
The demonstration is on YouTube, so the original positional sound will depreciate when it's uploaded. YouTube re-encodes the file, compresses the audio and reduces the channels from the original 5 channels to 2 channels.

GenAudio should have uploaded it onto their own website so the file could stay intact. Saying that it with DTS Encoding enabled on my system it still sounded fantastic.
 
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#72
It's also maybe worth noting for the folks complaining about "GPU cycles being stolen" that TrueAudio has its own separate hardware DSP engine on the card, so it will only steal a minute % of bandwidth for the audio setup data, which is popped into the GPU RAM and loaded as needed/instructed from there.

This is probably worth a read and echoes/confirms some of the positive thoughts in this thread:

http://semiaccurate.com/2013/10/09/like-mantle-amds-trueaudio-massive-step-forward/

LGTM! :)
 
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#73
Something something Betteridge's Law of Headlines.
 
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#74
Something something Betteridge's Law of Headlines.
I think if it mearly improved the terrible lip syncing in most games id be happy.
 
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#75
Invest in home cinema and you won't care what Creative and Microsoft do.
Not even a top quality HC 7.1 cannot offer the same precision and effects as those 3D sound techniques, like up/down, far/close, sound bouncing/reflection, reverberation/echo, etc, etc. ;)