Win7 x86 + 1.2.5 = No DTS (even though receiver says "DTS")

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What soundcard to you have (make, model, chip)?
Diamond Audio 5.1 Cmedia chip (don't remember all the exacts for sure)

What steps will reproduce the problem?
1. Try to play DTS .mkv files
2. Test DTS playback in Windows control
3.

What is the expected output? What happens instead?
Expected to output DTS.  Receiver (HK AVR254 displays "DTS" but no sound
can be heard.

What version of the driver are you using? On what operating system? What
version of the operationg system are you using (32 or 64 bit)?
Tried both x64 and x86 Win 7 RC.  Tried both 1.2.5 wave-RT and non wave-RT.
 Can't get it to work.

What ports of the soundcard are affected by the bug (e.g. SPDIF, Mic-In)?
SPDIF

Please provide any additional information below.
I remember I had this problem when trying out the Beta of Win7, but I don't
remember how I fixed it... thanks

Original issue reported on code.google.com by s.wai...@gmail.com on 11 Jul 2009 at 11:56

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I've tried to reproduce the error unsuccessfully. If AC3 works, dts should work 
as well because the formats' 
handling is not that much different in the code. I suspect a misconfiguration 
of your receiver - please confirm.

Original comment by dogb...@gmail.com on 12 Jul 2009 at 7:20

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I'll retry later this week hopefully - Taking my Unit operations lab course and 
I'm
pretty busy.  I looked briefly through the receiver settings but didn't see 
anything.
 Weird thing is it worked the day before on the beta doing DTS but when I installed
RC it started acting up.  Like I mentioned before, I ran into the problem 
originally
with the beta but I ended up getting around it somehow.

Thanks for looking into it for me - I'll report back with my findings and 
*hopefully*
a solution later this week.

Original comment by s.wai...@gmail.com on 12 Jul 2009 at 9:25

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Just spent 30 minutes trying to figure it out.  Nothing.  Dolby Digital works 
fine,
DTS is being difficult...

Original comment by s.wai...@gmail.com on 13 Jul 2009 at 4:03

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I've tried it on Win 7 x64 RTM and it just works out of the box.

Original comment by dogb...@gmail.com on 13 Jul 2009 at 5:52

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Which build is RTM?  Does RTM load with a RC key?  Was this with WaveRT? I'll 
try it
out and report back... 

Original comment by s.wai...@gmail.com on 13 Jul 2009 at 6:15

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build 7600, I didn't specify a key (it installs and runs for 30 days without), 
and I've chosen the regular version.

Original comment by dogb...@gmail.com on 13 Jul 2009 at 6:22

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I'll try build 7600 with non-waveRT hopefully on Wednesday (maybe tomorrow if 
I'm
lucky).  I'll let you know if it works.

BTW - What exactly is the benefit of WaveRT vs regular?

Original comment by s.wai...@gmail.com on 13 Jul 2009 at 6:36

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for the sake of it, I've tested the wavert version in 7 RTM as well - it works 
just 
fine.

there is extensive documentation at msdn outlining the wavert stuff. for the 
end 
user, the differences are marginal.

Original comment by dogb...@gmail.com on 13 Jul 2009 at 7:30

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any news?

Original comment by dogb...@gmail.com on 21 Jul 2009 at 12:05

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I downloaded build 7600 but have yet to have time to test.  Finished our last 
report
and presentation for Ops class today, so I should have it tested pretty soon.

Original comment by s.wai...@gmail.com on 21 Jul 2009 at 2:56

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Installed build 7600... installed 1.2.6... still can't get DTS to work, but DD 
is
working perfectly.  I'm beginning to believe the receiver is the culprit, but 
I'm
really confused as to why it worked while I was using the Beta.

Original comment by s.wai...@gmail.com on 25 Jul 2009 at 8:08

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I'm running vista 64 sp2. using your wave-rt drivers. I can play DTS music only 
if i 
use foobar using WASAPI . If i try using any other way all i get is the 
receiver 
switching to DTS but no sound play's. foobar looks like it's playing the file 
normally. I tried monkey audio samething.

I need it to work with out WASAPI ..is this possible ?

Original comment by peterttu...@gmail.com on 30 Jul 2009 at 4:29

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Thanks for the post gglt, reminded me to update.

Turns out that it works now... although the Windows DTS test doesn't actually 
work,
using AC3 Filter and setting the DTS setting to "wrapped" works...

Original comment by s.wai...@gmail.com on 30 Jul 2009 at 11:10

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gglt.., that's because you're trying to play DTS sounds which have been 
embedded into a wave file. The 
audio service of vista alters a few bits of the stream and corrupts it. hence, 
a bitperfect interface such as 
WASAPI is required.

s.waites, thanks for the update - this gives me at least some kind of clue. You 
have to be patient for 
another six weeks at least for an update though - I am currently in the midst 
of something.

Original comment by dogb...@gmail.com on 31 Jul 2009 at 4:13

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s.waites, I'm having the same issue with the Windows 7 Ultimate x64 RTM and 
1.2.6 of 
this driver. DD seems to play fine but when I select a movie that only has a 
DTS 
track, I get nothing. If I reimage the computer as is with Vista Ultimate x86 
and 
choose the same movie file, everything works fine with DTS. It's definitely not 
the 
receiver. Could be something new in Windows 7?

Original comment by wfiel36...@gmail.com on 1 Sep 2009 at 3:55

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wfiel - Are you using AC3 Filter when you play your movies?

Original comment by s.wai...@gmail.com on 1 Sep 2009 at 3:58

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s.waites - Well, I'm trying to have the "cleanest" setup possible without the 
aid of 
other components. Under Vista, I only installed this driver and selected SPDIF 
as 
the default with 96kHz as the output and everything worked fine as long 
as "Exclusive" mode was selected under the Windows Sound Control Panel. In 
Windows 
7, I'm following the same setup and it's not working. I can however, switch 
back to 
my Windows Vista image where everything is working fine! I doubt it's anything 
specific with this driver; maybe something in Windows 7 but I can't "put my 
finger 
on it."

Original comment by wfiel36...@gmail.com on 4 Sep 2009 at 12:50

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I'm having a similar issue I think. I have some DTS wav files that used to play 
fine in XP. I've since 
installed windows 7 64 bit and they no longer work. Using media player classic 
64 bit, sometimes I get 
static and sometimes I get silence. The receiver usually says DTS when I get 
silence. Using the control 
panel tests Dolby digital works, but I don't hear anything for DTS. All the 
frequencies seem to work. 

Original comment by jacobhy...@gmail.com on 16 Dec 2009 at 4:21

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for vista and 7, you need to use something to bypass the audio service, e.g. 
foobar2000 with kernel streaming and the non-wavert version of the driver.

Original comment by dogb...@gmail.com on 16 Dec 2009 at 4:29

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Thanks for the really quick response.  That's unfortunate that the Windows 7 
Audio 
service won't allow for direct pass through of DTS.  At least there are some 
players 
that will still work.

Original comment by jacobhy...@gmail.com on 16 Dec 2009 at 4:14