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VGLeaks: Details on PS4 Audio Processor (ACP)
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Alx
Member
Well the PS4 voice commands have been announced for dashboard and menu navigation, when most of the console resources are free to be used. The main benefit of dedicated hardware like that of the X1 is in scenarios where it should run alongside other demanding tasks, I reckon.
Give me good stereo support via Dualshock 4 3.5mm audio jack, and I will be happy.
Agree.
Reminds me that I need to find a good 3.5mm headset, as I don't think I want to roll with my wired mono USB one or any of my bluetooth earpieces.
Anybody have recommendations? I think the criteria would be short cord, stereo and I think I'd like the kind that goes around the back of your neck rather than over your head. I'd hoped that my iPhone headsets would work, but that doesn't appear to be the case.
freefornow
Gold Member
Don't really follow any leak type news, but why would a document from Sony (proprietary and confidential), detailing specifics say "presumably"??
BruiserBear
Banned
lol
blastprocessor
The Amiga Brotherhood
Not worried and i'm sure there's plenty to learn about the PS4, i.e., the 2nd processor for low power mode, etc.
I know the ridiculousness of it, but if he's going to do it, he may as well have the right figure of around 15 or 17 or whatever than his 200 figure...
Chobel
Member
I assume so, I mean what's the point of mentioning +200 mp3 if there's no mixing?
velociraptor
Junior Member
Well that sucks. I just hope the sound quality is equal to the PS3; which sounded amazing on my system.
CassidyIzABeast
Member
so basically SHAPE frees up 50% more processing power and there will be no visual difference between multiplat titles
In terms of hardware, it seems less capable than XB1's audio part. The effect on game software is likely to be rather insignificant -- a small difference in CPU load for audio processing at best.
So is this better than what the Xbone has, or the same, or worse, or is there no way to know? And will it make a difference one way or another?
Crimson_Gold
Member
Wait what
WHAT IF THE WEAKER CONSOLE ACTUALLY ENDS UP MORE POWERFUL?
you might be limited to only 7.1 uncompressed LPCM, will that do?
Oppo
Member
TheRealTalker
Banned
what bombshell when did new Kinect info come out?
Graphics Horse
Member
The chip doesn't do filtering and effects, you have to use the APU, it's up to developers whether they use gpgpu code or cpu code, but cpu is more straight forward for now.
Good question, I'd asssume so but it doesn't say. If there's no filtering options on the chip, then possibly not as it would be less functional than what you'd expect for an audio output.
Nightengale
Member
The fact that consolewarz gets dragged into the muddy trenches of comparing dedicated audio chips is simply weird.
phosphor112
Banned
Encoding and decoding takes the biggest hit out of regular CPU cycles. But the addition of basic high/lowpass filters in the Shape will save a few extra resources, giving it an advantage.
PodcastFips
Member
Playing mp3's or audio files and shit is so trivial. I don't get why anyone on earth cares about the audio chips in the new consoles. Is computing power suddenly going to allow for audio that just wasn't possible on the last consoles? I doubt it.
I'm more interested in ADC and DAC quality, but no one seems to care about that.
EDIT, forget I said this...
When are real-time filtering and effects really used? If they're filtering the bandwidth of voice communication with EQ, that's an incredibly, incredibly low cpu hit.
I'm more interested in ADC and DAC quality, but no one seems to care about that.
EDIT, forget I said this...
Alx
Member
Sometimes during the TGS I think. I didn't hear it first-hand, but there was a topic about it.
http://www.neogaf.com/forum/showthread.php?t=681053
Yep. Most sound processing can be done through software, even if it may be less efficient than dedicated hardware (you can perfectly have voice recognition on any PC for example, without adding any additional hardware). If you're in the dashboard and your CPU is twiddling its thumbs, it shouldn't be a problem to make it process voice commands. While in the middle of a game, your CPU has better things to do, so that's where a dedicated chip may come useful.
*edit : in the case of the Xbone, another benefit of not using the main CPU would be the "Xbox on" scenario : I suppose it's better to have a dedicated chip to handle voice commands and get out of idle state while the bigger components are "sleeping".
/end
The story here is "Audio chips: The problem solved 10 years ago"
Anyone who would be at the point of caring about a DAC wouldn't be using a console DAC in the first place.
Anyone who would be at the point of caring about a DAC wouldn't be using a console DAC in the first place.
phosphor112
Banned
http://www.neogaf.com/forum/showpost.php?p=83628945&postcount=26
Xbone audio chip is reserved for kinect use. So really it could be an advantage for ps4.
That kind of depends on whether a game would otherwise need more power for audio codec vs dsp.
Looking at Killzone 2's breakdown of SPU usage, they used on aggregate about 10% of one SPU for audio (and bear in mind, they could have used a lot more if they wanted/needed). Over half that time seems to have related to MP3 decoding, the rest for effects. In a case like that, if you had a chip to offload mp3 decoding to, that chip would be handling 'most' of the burden.
Silverthorn
Member
Slide has a 2012 date....specs were likely in flux...they probably know bye now...one would hope
PodcastFips
Member
Well, it says 2012 at the bottom. Things can be more specific by now?`
EDIT: Too slow.
they don't have DACs, they only have digital outputs now (HDMI/optical)
Agreed. The slide is from 2012 though, maybe the audio chip just wasn't finished back then and they didn't know the exact amount of streams supported etc.
Edit: Beaten. Twice.
iceatcs
Junior Member
From 2012. I believe they don't have this chip on their hand. Maybe that's why is presume.
phosphor112
Banned
Slide has a 2012 date....specs were likely in flux...they probably know bye now...one would hope
Could very well be possible.
I do think it's all odd. It might be because of Cerny, but sony has always had better sound options in their devices. Even the Cell, being used last gen, allowed them to have 7.1 LPCM in any game that supported it.
Because they try to find anything that could close the gap between PS4 and XB1 specs.
amstradcpc
Member
System: encoding and decoding for audio chat...
They mention one thing and then write suspension points like it made thousands of things apart from it. At least mention two!.
phosphor112
Banned
Seriously.
amstradcpc
Member
10% of a SPU for sound processing is like 100% of a Jaguar VMX fpu unit. Cell could manage, what? 50 streams of video with audio at once?.
192khz is completely unnecessary and theoretically it's likely to negatively affect audio quality.
velociraptor
Junior Member
Kaz on GT6:
- Sound processing takes lots of RAM from PS3 (for those who don't know, PS3 does not have separate sound-processor, it is the Cell that does almost everything, from graphics to audio and it is pretty much choked when doing 7.1 surround for instance, op.a.) so sounds have to be compressed
10% of a SPU is more like 2.56GFLOPS. likely something that any CPU in the past 5/6/7 years could emulate.
LittleJohnny
Banned
Exactly! Then when people try to explain in laymans terms what it really represents by showing how much GFLOPS it would take to emulate it using CUs, people flip saying no way Shape can be a 200GFLOPS processor when it was only an example of utilization lol.
"Phew! The PS4 can produce sound"
DeviantBoi
Member
It make me feel almost uncomfortable.
Nothing to see here, move along
Sounds like the XONE has better audio processing HW and that the CPU/GPGPU on PS4 will be needed to match it.
No need to match it.
?
I'd have reckoned maybe more like 20-30%
But I've no benchmarks here. Do you?
The point though, wasn't how a Jaguar compares to a SPU. The point was the even 'just' offloading audio decoding might spare the CPU of a lot or even most audio processing, depending on the game.
Not all of it, at least according to what I read.
