HD audio from HTPC - AVS Forum
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post #1 of 9 Old 07-29-2013, 09:05 AM - Thread Starter
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This may be a silly question but I have spent a lot of time looking and can't find the answer. My current PC will not send DTS-HD or Dolby True HD audio via HDMI from a EVGA GTX 570 card. Not sure why. It was only meant to be a test anyway as I want to build a media server/HTPC.

My question, and sorry if it has been answered before but I can't find the answer:

Do I need to purchase a specific motherboard or graphics card to get HD audio sent to my AVR for decoding by the AVR?

I am planning to buy this motherboard but want to make sure it will send HD audio to the AVR for decoding.

http://www.newegg.com/Product/Product.aspx?Item=N82E16813157303

Thanks in advance and again sorry for the stupid question. I consider myself fairly knowledgeable, but this HTPC stuff is all brand brand brand new to me.
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post #2 of 9 Old 07-29-2013, 11:16 AM
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Does the media you are sending have hd audio? And are you outputting that stream? What software are you using for playback?
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post #3 of 9 Old 07-29-2013, 11:29 AM - Thread Starter
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Quote:
Originally Posted by assassin View Post

Does the media you are sending have hd audio? And are you outputting that stream? What software are you using for playback?

Assassin,
Thank you for your response. I understand you have quite a bit of knowledge and I appreciate your willingness to help me out. You have to understand I am new at this and very naive but know my way around computers and tech. I have built about 10 computers over the years, but this is my first dive into HTPC.

I am looking to take all my blu ray collection and move them to a media server or HTPC. I am planning on building a 20 or so TB HTPC that is capable of playing Blu Ray rips through my Denon x4000 amp through a projector. It will be operating using XBMC. I attempted to test a few things with my current rig last night and ran into some issues getting audio to the AVR. It will output standard def audio signals via mini HDMI to HDMI on the AVR and allow the AVR to do the decoding, but when I select the HD audio track the frame rate drops to 4 or so FPS. I was assuming the issue was with my EVGA GTX 570 but after further research I see no reason why it wouldn't work. Is it possible that my mini HDMI to HDMI cable is not sending the signal correctly?

I would like to build this but want to make sure it will send HD audio for my AVR to decode.

Wish List:
Qty. Product Description Savings Total Price
1 SILVERSTONE Black Aluminum / Steel Grandia Series SST-GD08B ATX Media Center / HTPC Case SILVERSTONE Black Aluminum / Steel Grandia Series SST-GD08B ATX Media Center / HTPC Case
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6 Seagate Desktop HDD.15 ST4000DM000 4TB 64MB Cache SATA 6.0Gb/s 3.5 Seagate Desktop HDD.15 ST4000DM000 4TB 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
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1 Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model KHX1600C9D3B1K2/8GX Kingston HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model KHX1600C9D3B1K2/8GX
Item #: N82E16820104262
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1 ASRock H77M LGA 1155 Intel H77 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard ASRock H77M LGA 1155 Intel H77 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard
Item #: N82E16813157303
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1 Intel Core i3-3225 Ivy Bridge 3.3GHz LGA 1155 55W Dual-Core Desktop Processor Intel HD Graphics 4000 BX80637I33225 Intel Core i3-3225 Ivy Bridge 3.3GHz LGA 1155 55W Dual-Core Desktop Processor Intel HD Graphics 4000 BX80637I33225
Item #: N82E16819116774
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1 ADATA Premier Pro SP900 ASP900S3-64GM-C 2.5 ADATA Premier Pro SP900 ASP900S3-64GM-C 2.5" 64GB SATA III MLC Internal Solid State Drive (SSD)
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Thanks again for any and all input as I am so new and naive to this process.
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post #4 of 9 Old 07-30-2013, 05:28 AM - Thread Starter
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Anyone with any thoughts? Just a newbie trying to learn....
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post #5 of 9 Old 07-30-2013, 06:15 AM
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I would start with downloading a program called "mediainfo" and making sure your file definitely has an HD Audio track.
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post #6 of 9 Old 07-30-2013, 04:42 PM - Thread Starter
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Quote:
Originally Posted by assassin View Post

I would start with downloading a program called "mediainfo" and making sure your file definitely has an HD Audio track.

I am sure the file has HD audio as I can see it being sent to the receiver. The receive attempts to play it but the frame rate drops. I am guessing it has to do with the cable or a handshake issue. I will build my new system none the less and hope that I do not get the same results.
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post #7 of 9 Old 07-30-2013, 10:33 PM
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i'm almost positive the gtx 570 wont bitstream hd audio as I have tried mine with several avr and the hd formats are never shown in the supported formats tab.

Receivers tried: Onkyo RC260, Onkyo Tx-NR515, Pioneer VSX 1122K

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post #8 of 9 Old 07-31-2013, 04:21 AM
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Quote:
Originally Posted by ikkuranus View Post

i'm almost positive the gtx 570 wont bitstream hd audio as I have tried mine with several avr and the hd formats are never shown in the supported formats tab.

Receivers tried: Onkyo RC260, Onkyo Tx-NR515, Pioneer VSX 1122K

The 570 will convert hd formats to lpcm. Which is just as good as "hd audio". Your receiver won't show it as hd audio but it is still high bitrate lossless audio so be happy.

lpcm is less efficient than the hd formats and will use 30% or so more bandwidth. HDMI provides plenty of bandwidth so this really isn't an issue.
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post #9 of 9 Old 07-31-2013, 04:45 AM
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GTX 570 supports multichannel LPCM, DD, DTS but does not support TrueHD, DTS-HD. So TrueHD and DTS-HD have to be decoded to multichannel LPCM (by a software decoder or player such as LAV Audio Decoder with dtsdecoderdll.dll [Arcsoft's DTS decoder]; XBMC can't decode DTS-HD).

GPU integrated in any Intel CPU since Clardale in 2011 supports TrueHD and DTS-HD over HDMI. The mb you mentioned is good.
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