• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Which soundcard to decode DTS or Dolby Digital?

Joined
May 18, 2010
Messages
3,416 (1.13/day)
Likes
1,049
System Name My baby
Processor Athlon II X4 620 @ 3.5GHz, 1.45v, NB @ 2700Mhz, HT @ 2700Mhz - 24hr prime95 stable
Motherboard Asus M4A785TD-V EVO
Cooling Sonic Tower Rev 2 with 120mm Akasa attached, Akasa @ Front, Xilence Red Wing 120mm @ Rear
Memory 16 GB G.Skills 1600Mhz
Video Card(s) ATI ASUS Crossfire 5850
Storage Samsung 1Tb EcoGreen hard drive
Display(s) Hanngs-G 19"
Case Antec VSK 2000 Black Tower Case
Audio Device(s) Onkyo TX-SR309 Receiver, 2x Kef Cresta 1, 1x Kef Center 20c
Power Supply OCZ StealthXstream II 600w, 4x12v/18A, 80% efficiency.
Software Windows Vista X64
#26
That's not exactly true. The PS3 doesn't support encoding of Dolby True HD or DTS HD Master Audio, so it can only pass though pre-encoded soundtracks on Blu-ray discs (and only on the slim or super slim models).
That is exactly what I said.

However, all PS3 versions can output LPCM up to 7.1 for both games and Blu-ray discs.
Didn't know some PS3 games support LPCM. I would have thought PCM 5.0 by bypassing the built in DD/DTS encoder. I wonder how many games actually support LPCM.
 
Joined
Dec 16, 2010
Messages
1,485 (0.53/day)
Likes
545
System Name My Surround PC
Processor Intel Core i7 4770K @ 4.2 GHz (1.15 V)
Motherboard ASRock Z87 Extreme6
Cooling Swiftech MCP35X / XSPC Rasa CPU / Swiftech MCW82 / Koolance HX-1320 w/ 8 Scythe Fans
Memory 16GB (2 x 8 GB) Mushkin Blackline DDR3-2400 CL11-13-13-31
Video Card(s) MSI Nvidia GeForce GTX 980 Ti Armor 2X
Storage Samsung SSD 850 Pro 256GB, 2 x 4TB HGST NAS HDD in RAID 1
Display(s) 3 x Acer K272HUL 27" in Surround 7860x1440
Case NZXT Source 530
Audio Device(s) Integrated ALC1150 + Logitech Z-5500 5.1
Power Supply Seasonic X-1250 1.25kW
Mouse Gigabyte Aivia Krypton
Keyboard Logitech G15
Software Windows 8.1 Pro x64
#27
Didn't know some PS3 games support LPCM. I would have thought PCM 5.0 by bypassing the built in DD/DTS encoder. I wonder how many games actually support LPCM.
All PS3 games have to support LPCM; it was part of the original specifications of the console. 2 channel LPCM is the minimum required, but up to 7.1 is supported. It's up to the game designers as to how many sound output channels they want to support.

There are two possible implementation of DD/DTS in games on the PS3. By default, a game designer programs their game to output just LPCM and then the PS3 system software takes that LPCM and encodes it into DD/DTS if that is the highest supported output (as chosen in the PS3 system software audio settings). But in some higher end games, the game designer can license the DD or DTS encoder software directly, implement it into game code, and tune it specifically to their game so that the best audio quality is possible within the specification. These are the games that prominently display the Dolby Digital or DTS logos in their games. Games that fit into the second case still have to support LPCM though (only two channel is required, but if multi-channel audio is already programmed into the game, it's trivial to tell the software to bypass the encoder).

I have not come across a PS3 game that supports multi-channel audio only though DD/DTS and not through LPCM. As long as you select to prefer bitstreaming (i.e. avoid decoding) in the PS3 system software, you can tell this pretty easily. With this setting, if the only surround format available is DD/DTS, the PS3 will always choose to bitstream DD/DTS over decoding it and outputting it over multi channel LPCM; the only way you could get LPCM in this mode is if it was a native soundtrack. So if the PS3 is outputting multi channel LPCM and the bitstreaming option is enabled, then you are not just decoding DD/DTS.

The XBOX 360, in contrast, does not support greater than 2 channel LPCM for games, so it has to output Dolby Digital via HDMI for multi-channel audio (DTS encoding is not supported). It's still up to the game designer whether they just want to use Microsoft's built in implementation of the DD encoder or to pay to license it directly and get better control over the encoding parameters.

This is, for the few console games I do play, one of the reasons I choose the PS3 versions of games.
 
Last edited:
Joined
May 18, 2010
Messages
3,416 (1.13/day)
Likes
1,049
System Name My baby
Processor Athlon II X4 620 @ 3.5GHz, 1.45v, NB @ 2700Mhz, HT @ 2700Mhz - 24hr prime95 stable
Motherboard Asus M4A785TD-V EVO
Cooling Sonic Tower Rev 2 with 120mm Akasa attached, Akasa @ Front, Xilence Red Wing 120mm @ Rear
Memory 16 GB G.Skills 1600Mhz
Video Card(s) ATI ASUS Crossfire 5850
Storage Samsung 1Tb EcoGreen hard drive
Display(s) Hanngs-G 19"
Case Antec VSK 2000 Black Tower Case
Audio Device(s) Onkyo TX-SR309 Receiver, 2x Kef Cresta 1, 1x Kef Center 20c
Power Supply OCZ StealthXstream II 600w, 4x12v/18A, 80% efficiency.
Software Windows Vista X64
#28
All PS3 games have to support LPCM; it was part of the original specifications of the console. 2 channel LPCM is the minimum required, but up to 7.1 is supported. It's up to the game designers as to how many sound output channels they want to support.
DD and DTS are also part of the specification. Realistically how many games support LPCM 7.1? Personally I'm not a fan of it, requires too much room space for little support. I think game developers know this and cater for DD 5.1 and DTS 5.1. I think game developers are lazy so 90% of the time they'll have 5 uncompressed audio channels to fulfil the LPCM obligation and use built in DD/DTS encoder to fill the DD and DTS obligations.
 
Joined
Dec 16, 2010
Messages
1,485 (0.53/day)
Likes
545
System Name My Surround PC
Processor Intel Core i7 4770K @ 4.2 GHz (1.15 V)
Motherboard ASRock Z87 Extreme6
Cooling Swiftech MCP35X / XSPC Rasa CPU / Swiftech MCW82 / Koolance HX-1320 w/ 8 Scythe Fans
Memory 16GB (2 x 8 GB) Mushkin Blackline DDR3-2400 CL11-13-13-31
Video Card(s) MSI Nvidia GeForce GTX 980 Ti Armor 2X
Storage Samsung SSD 850 Pro 256GB, 2 x 4TB HGST NAS HDD in RAID 1
Display(s) 3 x Acer K272HUL 27" in Surround 7860x1440
Case NZXT Source 530
Audio Device(s) Integrated ALC1150 + Logitech Z-5500 5.1
Power Supply Seasonic X-1250 1.25kW
Mouse Gigabyte Aivia Krypton
Keyboard Logitech G15
Software Windows 8.1 Pro x64
#29
Personally I'm not a fan of it, requires too much room space for little support. I think game developers know this and cater for DD 5.1 and DTS 5.1. I think game developers are lazy so 90% of the time they'll have 5 uncompressed audio channels to fulfil the LPCM obligation and use built in DD/DTS encoder to fill the DD and DTS obligations.
The one thing you're forgetting is that Sony has Blu-ray disc in the PS3. On the X360 developers are looking to cut corners to fit games on a minimum number of DVDs, and the sound quality can suffer for that. When you have a multiplatform game designed to fit on DVDs and find yourself with extra space on a Blu-ray disc, one of the easiest ways to use this space is to put less compressed sound files on the disc. Lossless audio isn't likely to be used, but 256/320kbps MP3 samples mixed onto LPCM would sound much better than Dolby Digital.
 
Joined
May 24, 2007
Messages
984 (0.24/day)
Likes
264
Location
Florida
Processor Ryzen2700x@ 4.15ghz 1.38v / Threadripper 1950x @ Stock
Motherboard Asus CH7wifi / Asus Zenith X399
Cooling Custom loop / Custom Dual loop
Memory 16gb ddr4 3600MHZ G SKill TridentZ RGB / 32gb ddr4 3200MHZ G.Skill TridentZ RGB
Video Card(s) XFX RX Vega 64 / Sapphire RX Vega 64
Storage HP EX920 1TB boot / Samsung 950 Pro 512GB boot
Display(s) Asus XG32VQ / Dell UltraSharp U2711
Case Lian Li 011-Dynamic in white /Phanteks Elite
Power Supply Seasonic Prime Titanium 850w / Seasonic Prime Titanium 1000w
Mouse Logitech G 900s
Keyboard Corsair K70 RGB rapidfire/ Razer Chroma Black Widow
Software Win 10 Pro
#30
That's not exactly true. The PS3 doesn't support encoding of Dolby True HD or DTS HD Master Audio, so it can only pass though pre-encoded soundtracks on Blu-ray discs (and only on the slim or super slim models). However, all PS3 versions can output LPCM up to 7.1 for both games and Blu-ray discs.
Last I remember the first gen(40&60) ps3 do it was the slimline and the other subsequent models that don't.

To the OP, have you also checked out AVForums?
All PS3 games have to support LPCM; it was part of the original specifications of the console. 2 channel LPCM is the minimum required, but up to 7.1 is supported. It's up to the game designers as to how many sound output channels they want to support.

There are two possible implementation of DD/DTS in games on the PS3. By default, a game designer programs their game to output just LPCM and then the PS3 system software takes that LPCM and encodes it into DD/DTS if that is the highest supported output (as chosen in the PS3 system software audio settings). But in some higher end games, the game designer can license the DD or DTS encoder software directly, implement it into game code, and tune it specifically to their game so that the best audio quality is possible within the specification. These are the games that prominently display the Dolby Digital or DTS logos in their games. Games that fit into the second case still have to support LPCM though (only two channel is required, but if multi-channel audio is already programmed into the game, it's trivial to tell the software to bypass the encoder).

I have not come across a PS3 game that supports multi-channel audio only though DD/DTS and not through LPCM. As long as you select to prefer bitstreaming (i.e. avoid decoding) in the PS3 system software, you can tell this pretty easily. With this setting, if the only surround format available is DD/DTS, the PS3 will always choose to bitstream DD/DTS over decoding it and outputting it over multi channel LPCM; the only way you could get LPCM in this mode is if it was a native soundtrack. So if the PS3 is outputting multi channel LPCM and the bitstreaming option is enabled, then you are not just decoding DD/DTS.

The XBOX 360, in contrast, does not support greater than 2 channel LPCM for games, so it has to output Dolby Digital via HDMI for multi-channel audio (DTS encoding is not supported). It's still up to the game designer whether they just want to use Microsoft's built in implementation of the DD encoder or to pay to license it directly and get better control over the encoding parameters.

This is, for the few console games I do play, one of the reasons I choose the PS3 versions of games.
I think GOW3 for the ps3 do...don't quote me though.
 
Joined
Dec 16, 2010
Messages
1,485 (0.53/day)
Likes
545
System Name My Surround PC
Processor Intel Core i7 4770K @ 4.2 GHz (1.15 V)
Motherboard ASRock Z87 Extreme6
Cooling Swiftech MCP35X / XSPC Rasa CPU / Swiftech MCW82 / Koolance HX-1320 w/ 8 Scythe Fans
Memory 16GB (2 x 8 GB) Mushkin Blackline DDR3-2400 CL11-13-13-31
Video Card(s) MSI Nvidia GeForce GTX 980 Ti Armor 2X
Storage Samsung SSD 850 Pro 256GB, 2 x 4TB HGST NAS HDD in RAID 1
Display(s) 3 x Acer K272HUL 27" in Surround 7860x1440
Case NZXT Source 530
Audio Device(s) Integrated ALC1150 + Logitech Z-5500 5.1
Power Supply Seasonic X-1250 1.25kW
Mouse Gigabyte Aivia Krypton
Keyboard Logitech G15
Software Windows 8.1 Pro x64
#31
Last I remember the first gen(40&60) ps3 do it was the slimline and the other subsequent models that don't.
The first generation "fat" PS3s removed a lot of features during their lifetime, but none of them supported bitstreaming DTS HD Master Audio or Dolby TrueHD; they can still decode it to LPCM though. Only the "slim" and "superslim" PS3s can bitstream those two formats. Maybe you're thinking of SACD support, which was present in the initial models but not the later ones?
 
Top