HD4670 had built in HDMI sound card. Just disable your onboard sound. Then install ATI HDMI audio driver. You can get TrueHD decoded by ffdshow then output as LPCM. You can also bitstream DD and DTS to receiver using this method. Make sure you check 16bit, 24bit and 32bit + SPDIF passthrough in your ffdshow.

Just built custom PC with 4850 video card. I just bought from redic 4850 VaporX 1Gb with HDMI port only RM 469.

Depends. If you play direct blu-ray disc, most of the commercial software will downsample to 48khz/16bit. But if you rip the blu-ray into ts or m2ts format, then you can use ffdshow to decode TrueHD to LPCM. Tested to run at 24bit no problem. Haven't try 96khz but should be supported. Only problem is currently no software can decode DTS-MA into LPCM so you are stuck with DTS core only.

ycs, I didn't switch HDMI input as I only connect my pc. PS3 is connected to my YSP4000.

This post has been edited by pierreye: Jul 9 2009, 06:44 PM

Yes and no. So far the only solution for bitstreaming is using Asus Xonar 1.3. No other soundcard is PAP compatible.

Only LPCM for TrueHD. DTS-MA can only play DTS Core so no loseless 24bit.

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Added on July 11, 2009, 6:41 pmIf you want to save, cut out XonarHDAV and use ATI HDMI out. Then buy 4850 as in terms of gaming, much better. Do you play at 1080p or 720p. If 1080p 4850 is the min. No need 2 hd. 1 TB hd should be good enough. Add hd later. In this case it's more close to 2k target.

This post has been edited by pierreye: Jul 11 2009, 06:41 PM

Those HTPC with LCD is just gimmick. Actually it's more troublesome as if it is using dual output from your video card. If you boot your PC without turning on your tv, it'll turn you LCD screen into primary display and tv as secondary. Also, LCD touchscreen is useless. If you are using it as HTPC, you are not going to walk to your tv and press the touchscreen. Casing with VFD is more pratical. Check out iMon. Silverstone very expensive. You can buy a desktop casing you like and get iMon or Thermaltake VFD(iMon oem) that come with remote.

HD4850 VaporX 1Gb only RM 469. Get from Redic last week.

I don't hv Asus Xonar. RM 600 just for HD Audio bitstreaming is not worth it. Might as well get an Xtreamer NMT at RM 600. 4850 LPCM output is good enough for me. Compare to my PS3 LPCM output for TrueHD, not much difference. Separation and sound quality is good. Better than DTS or AC3. You can hear there is compression especially in AC3.

Regarding casing, are you putting it in the shelf? If yes, watch out on air flow. My previous built had overheating problem due to tiny dual 60mm fan at the back + 1 x 80mm fan at the front. The casing is so hot due to air flow restriction. Better look for those casing with 120mm fan at the back.

This post has been edited by pierreye: Jul 13 2009, 06:51 PM

No software decoder yet for DTS-HD MA. Only solution now is to convert DTS-HD MA to Multichannel FLAC loseless. But I don't prefer this method as it is troublesome and I'm getting NMT xtreamer which can bitstream DTS-HD MA. If you still want to convert, use eac3to. I remux most of my bd into .ts file format and strip it down to bare min mostly either TrueHD or DTS-MA.

The article you link actually mention it will downsample the DTS-HD MA (mostly 48khz, 24bit) to 48khz 16bit so you don't get bit to bit accuracy.

This post has been edited by pierreye: Jul 14 2009, 08:18 PM

My projector is fed with HTPC ATI HDMI. I have no problem with the gamma curve. I don't actually fix from catalyst driver as I believe it will skew the output. If it suppose to output 0,0,0 for black, then I expect the HDMI to output RGB 0,0,0 not some other value due to the tweak on the gamma or color on the video card. I have try XP and Vista and Vista is the better option. Reason is XP VMR9 cannot automatically expand 16-240 level to 0-255. So you need to calibrate your projector with 2 profile, one for video and another for PC level. If not you will either get black crush or washout due to incorrect level.

Another thing you can try is in the catalyst controller you can choose either YPbPr output or RGB output. Choose either one and check your gamma.

What player you are using? I'm using MPC-HC with DXVA support which can help on VC-1 and H264 accel. You can then use the built in Pixel Shader to tune the gamma + 3D color decoding correction. Check out the AVSforum for the code to do it. Since you have the i1Pro probe, you should have no problem to get a perfect color gamut BT.709 and correct gamma.

http://www.avsforum.com/avs-vb/showthread.php?t=912720

anfieldude,


Just rerun the calibration for my Plasma 50PY800. I'm using RGB full output but I can't get BTB and WTW with panny tv. So I suspect the tv only accept video levels, not pc levels. Attached is the calibration chart. I can get quite a uniform greyscale at D65 (dE less than 3) but gamma is avg at 1.9 for cinema. Lowest is around 1.78 and highest around 1.98.

Another option to manipulate the gamma a bit is use All Drv and All Cut to shift the Y value for high and low white point which might help. Might try that out tomorrow.

Nothing much can be done except using the MPC-HC shader to modify the gamma for the movie. Green a little bit oversaturated.

This post has been edited by pierreye: Jul 15 2009, 07:16 PM


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